Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| No. in series | No. in season | Title | Directed by | Written by | Original air date | Production code |
| --- | --- | --- | --- | --- | --- | --- |
| 81.0 | 1.0 | " Stewie Loves Lois " | Mike Kim | Mark Hentemann | September10,2006 | 4ACX32 |
| 82.0 | 2.0 | " Mother Tucker " | James Purdum | Tom Devanney | September17,2006 | 4ACX31 |
| 83.0 | 3.0 | " Hell Comes to Quahog " | Dan Povenmire | Kirker Butler | September24,2006 | 4ACX33 |
| 84.0 | 4.0 | " Saving Private Brian " | Cyndi Tang | Cherry Chevapravatdumrong | November5,2006 | 4ACX34 |
| 85.0 | 5.0 | " Whistle While Your Wife Works " | Greg Colton | Steve Callaghan | November12,2006 | 4ACX35 |
| 86.0 | 6.0 | " Prick Up Your Ears " | James Purdum | Cherry Chevapravatdumrong | November19,2006 | 5ACX01 |
| 87.0 | 7.0 | " Chick Cancer " | Pete Michels | Alec Sulkin & Wellesley Wild | November26,2006 | 5ACX02 |
| 88.0 | 8.0 | " Barely Legal " | Zac Moncrief | Kirker Butler | December17,2006 | 5ACX03 |
| 89.0 | 9.0 | " Road to Rupert " | Dan Povenmire | Patrick Meighan | January28,2007 | 5ACX04 |
| 90.0 | 10.0 | " Peter's Two Dads " | Cyndi Tang | Danny Smith | February11,2007 | 5ACX05 |
| 91.0 | 11.0 | " The Tan Aquatic with Steve Zissou " | Julius Wu | Mark Hentemann | February18,2007 | 5ACX06 |
| 92.0 | 12.0 | " Airport '07 " | John Holmquist | Tom Devanney | March4,2007 | 5ACX08 |
| 93.0 | 13.0 | " Bill and Peter's Bogus Journey " | Dominic Polcino | Steve Callaghan | March11,2007 | 5ACX07 |
| 94.0 | 14.0 | " No Meals on Wheels " | Greg Colton | Mike Henry | March25,2007 | 5ACX09 |
| 95.0 | 15.0 | " Boys Do Cry " | Brian Iles | Cherry Chevapravatdumrong | April29,2007 | 5ACX10 |
| 96.0 | 16.0 | " No Chris Left Behind " | Pete Michels | Patrick Meighan | May6,2007 | 5ACX11 |
| 97.0 | 17.0 | " It Takes a Village Idiot, and I Married One " | Zac Moncrief | a.bo | May13,2007 | 5ACX12 |
Question:
What's the production code of the episode written by Kirker Butler and directed by Dan Povenmire?
Answer:
4ACX33