You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 7-[(4-fluorophenyl)methyl]-9-hydroxy-N,N-dimethyl-8-oxo-6H-pyrrolo[3,4-g]quinoline-5-carboxamide ?
user
C21H18FN3O3
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