You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 5-amino-1-cyclopropyl-6,8-difluoro-7-[3-methoxy-4-(methylamino)pyrrolidin-1-yl]-4-oxoquinoline-3-carbonitrile .
user
C19H21F2N5O2
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