You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[1-[4-(2-acetyloxypropoxy)-2-chlorobenzoyl]-3-oxo-2,5-dihydro-1,4-benzodiazepin-4-yl]acetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H23ClN2O7
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