Task: Formula-prediction-context (source dataset: cisco-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   |
|-----:|:------------------------------|:------------------|:--------------|:------------------------|:----|:----|:----|:----|:----|
| 8538 | NCS 1000 Modules              | NCS1K-CNTLR2      | 1             | Supported in the portal |     |     |     |     |     |
| 8539 | NCS 1000 Modules              | NCS1K-EDFA        | 1             | Supported in the portal |     |     |     |     |     |
| 8540 | NCS 1000 Modules              | NCS1K-OTDR        | 1             | Supported in the portal |     |     |     |     |     |
| 8541 | NCS 1000 Modules              | NCS1K-PSM         | 1             | Supported in the portal |     |     |     |     |     |
| 8542 | NCS 1000 Power Supplies Total |                   | 5             |                         |     |     |     |     |     |
| 8543 | NCS 1000 Power Supplies       | NCS1K-2KW-AC      | 1             | Supported in the portal |     |     |     |     |     |
| 8544 | NCS 1000 Power Supplies       | NCS1K-2KW-AC2     | 1             | Supported in the portal |     |     |     |     |     |
| 8545 | NCS 1000 Power Supplies       | NCS1K-2KW-DC      | 1             | Supported in the portal |     |     |     |     |     |
| 8546 | NCS 1000 Power Supplies       | NCS1K4-AC-PSU     | 1             | Supported in the portal |     |     |     |     |     |
| 8547 | NCS 1000 Power Supplies       | NCS1K4-DC-PSU     | 1             | Supported in the portal |     |     |     |     |     |
| 8548 | NCS 2000 Modules Total        |                   | [Target Cell] |                         |     |     |     |     |     |
| 8549 | NCS 2000 Modules              | NCS2015-ECU       | 1             | Supported in the portal |     |     |     |     |     |
| 8550 | NCS 2000 Modules              | NCS2K-100G-CK-C   | 1             | Supported in the portal |     |     |     |     |     |
| 8551 | NCS 2000 Modules              | NCS2K-100GS-CK-C  | 1             | Supported in the portal |     |     |     |     |     |
| 8552 | NCS 2000 Modules              | NCS2K-100ME-CKC   | 1             | Supported in the portal |     |     |     |     |     |
| 8553 | NCS 2000 Modules              | NCS2K-12-AD-CCOFS | 1             | Supported in the portal |     |     |     |     |     |
| 8554 | NCS 2000 Modules              | NCS2K-16-AD-CCOFS | 1             | Supported in the portal |     |     |     |     |     |
| 8555 | NCS 2000 Modules              | NCS2K-16-WXC-FS   | 1             | Supported in the portal |     |     |     |     |     |
| 8556 | NCS 2000 Modules              | NCS2K-200G-CK-C   | 1             | Supported in the portal |     |     |     |     |     |
| 8557 | NCS 2000 Modules              | NCS2K-200G-CK-LIC | 1             | Supported in the portal |     |     |     |     |     |
| 8558 | NCS 2000 Modules              | NCS2K-20-SMRFS    | 1             | Supported in the portal |     |     |     |     |     |



min_row: 8538
max_row: 8558
min_col: 1
max_col: 9
target_cell_row_idx: 8548
target_cell_col_idx: 3
target_cell_value: 41
formula: =SUBTOTAL(9,C8549:C8589)