You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-(furan-2-yl)-N-(imidazo[1,5-a]pyridin-3-ylmethyl)-2-(4-methylphenyl)propanamide by IUPAC nomenclature, provide its molecular formula.
user
C22H21N3O2
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