Task: Formula-prediction-context (source dataset: ti-random)

You are given an table region extracted from a real Excel spreadsheet, which is centered around a cell called "Target Cell" (labeled as "[Target Cell]" shown in the table below). The table region below includes up to 10 rows above/below the Target Cell, and 10 columns to the left/right of the Target Cell. 

Your task is to analyze the table context surrounding the Target Cell, and predict the most likely Excel formula that should go in the Target Cell. If multiple formulas are possible, choose the most reasonable or commonly used based on context.

1. Please follow the standard formula syntax in Excel, e.g. always begins with an equal sign (=).
2. Base your predicted formula on the surrounding table context, e.g., column headers, annotations, and data values in nearby cells.
3. No explanation — just output the formula itself in a JSON format: {"formula": "your_formula_here"}.

Input Excel Snippet in Markdown format:
|    | A   | B                        | C                                        | D   | E   | F   | G   | H   | I             | J                  | K     | L                                                                                 | M   | N   | O   | P   | Q   | R                                                  | S   |
|---:|:----|:-------------------------|:-----------------------------------------|:----|:----|:----|:----|:----|:--------------|:-------------------|:------|:----------------------------------------------------------------------------------|:----|:----|:----|:----|:----|:---------------------------------------------------|:----|
|  4 |     | Sym.                     | Parameter                                |     |     |     |     | Min | Typ           | Max                | Units | NOTE                                                                              |     |     |     |     |     | Boost LED Driver with P-Channel Series FET Dimming |     |
|  5 |     |                          |                                          |     |     |     |     |     |               |                    |       |                                                                                   |     |     |     |     |     |                                                    |     |
|  6 |     | Input Specifications     |                                          |     |     |     |     |     |               |                    |       |                                                                                   |     |     |     |     |     |                                                    |     |
|  7 |     | VIN                      | Nominal input voltage range              |     |     |     |     | 22  | 24            | 26                 | V     | Enter nominal battery or power supply output voltage range                        |     |     |     |     |     |                                                    |     |
|  8 |     | Output Specifications    |                                          |     |     |     |     |     |               |                    |       |                                                                                   |     |     |     |     |     |                                                    |     |
|  9 |     | VF,LED                   | LED forward voltage                      |     |     |     |     | 2.9 | 3             | 3.1                | V     | Enter typical forward voltage range specified by LED manufacturer                 |     |     |     |     |     |                                                    |     |
| 10 |     | rLED                     | Dynamic resistance                       |     |     |     |     |     | 0.2           |                    | Ω     | Enter ypical LED dynamic resistance based on device I-V characteristics           |     |     |     |     |     |                                                    |     |
| 11 |     | NS                       | Number of LEDs in series                 |     |     |     |     | 20  | 20            | 20                 |       | ®To support multiple LED string configurations, enter min, typ and max quantity   |     |     |     |     |     |                                                    |     |
|    |     |                          |                                          |     |     |     |     |     |               |                    |       | ®For fixed string of LEDs, enter the same quantity in all columns (e.g. 10 10 10) |     |     |     |     |     |                                                    |     |
| 12 |     | VO                       | Output voltage range                     |     |     |     |     | 58  | 60            | 62                 | V     | Boost output voltage range                                                        |     |     |     |     |     |                                                    |     |
| 13 |     | PO(MAX)                  | Maximum output power                     |     |     |     |     |     |               | 60                 | W     | Enter maximum power required to achieve specified lumen output in application     |     |     |     |     |     |                                                    |     |
| 14 |     | ILED(CALC)               | LED current range                        |     |     |     |     | -   | [Target Cell] | 1034.4827586206898 | mA    | Calculated LED current based on maximum power and LED voltage range               |     |     |     |     |     |                                                    |     |
| 15 |     | RR                       | LED current ripple ratio                 |     |     |     |     |     | 5             |                    | %     | Enter LED current reipple specifications as percentage of maximum value           |     |     |     |     |     |                                                    |     |
| 16 |     | rD                       | LED string resistance                    |     |     |     |     | 4   | 4             | 4                  | Ω     | LED string dynamic resistance                                                     |     |     |     |     |     |                                                    |     |
| 17 |     | Dimming Specifications   |                                          |     |     |     |     |     |               |                    |       |                                                                                   |     |     |     |     |     |                                                    |     |
| 18 |     |                          | Program LED current using analog dimming |     |     |     |     | YES |               |                    |       | ®Select YES to program LED current                                                |     |     |     |     |     | YES                                                | NO  |
|    |     |                          |                                          |     |     |     |     |     |               |                    |       | ®Select NO for fixed LED string current                                           |     |     |     |     |     |                                                    |     |
| 19 |     |                          | Analog dimming range                     |     |     |     |     | 10  |               |                    | mA    | Set minimum LED string current or enter the minimum value calculated in 'Line 14' |     |     |     |     |     |                                                    |     |
| 20 |     | ILED                     | LED current set point / range            |     |     |     |     | 10  | -             | 1034.4827586206898 | mA    | LED current set point / range calculated based on user inputs                     |     |     |     |     |     |                                                    |     |
| 21 |     |                          | Enable series FET dimming                |     |     |     |     | NO  |               |                    |       |                                                                                   |     |     |     |     |     | YES                                                | NO  |
| 22 |     | fPWM                     | PWM dimming frequency                    |     |     |     |     |     | 200           |                    | Hz    | Enter PWM dimming frequency                                                       |     |     |     |     |     |                                                    |     |
| 23 |     | Converter Specifications |                                          |     |     |     |     |     |               |                    |       |                                                                                   |     |     |     |     |     | Boost LED Driver with N-Channel Series FET Dimming |     |
| 24 |     | ΔVIN(PP)                 | Input voltage ripple                     |     |     |     |     |     | 70            |                    | mV    | The parameter is used to determine input capacitance                              |     |     |     |     |     |                                                    |     |



min_row: 4
max_row: 24
min_col: 1
max_col: 19
target_cell_row_idx: 14
target_cell_col_idx: 9
target_cell_value: -
formula: =IF((J11=I11), "-", J13/I12*1000)