You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [(5aS,9aR)-1,2,3,4,5,5a,6,8,9,9a-decahydropyrido[4,3-b]azepin-7-yl]-(3-fluoro-4-methoxyphenyl)methanone by IUPAC nomenclature, provide its molecular formula.
user
C17H23FN2O2
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