You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule (5S)-5-[4-(difluoromethoxy)phenyl]-5-methyl-3-[2-[(2R)-2-methyl-2,3-dihydroindol-1-yl]-2-oxoethyl]imidazolidine-2,4-dione ?
user
C22H21F2N3O4
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