You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(7R)-N-[2-[(4-chlorophenyl)methoxy]ethyl]-5,6,7,8-tetrahydroimidazo[1,5-a]pyridine-7-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H20ClN3O2
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