You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 8-[chloro(difluoro)methoxy]-6-fluoro-4-oxo-7-(4-pyridin-2-ylpiperazin-1-yl)-1-[4-(pyrrolidin-1-ylmethyl)phenyl]quinoline-3-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C33H33ClF3N5O4
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