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system
Name the molecular formula for the molecule established as 2-[2-methoxy-4-[(3-oxo-6,7,8,9-tetrahydro-5H-imidazo[1,2-a]azepin-2-ylidene)methyl]phenoxy]-N-propan-2-ylacetamide using the IUPAC nomenclature.
user
C21H27N3O4
assistant