You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-imino-3-(2-methylpropylsulfonyl)-6-[[4-[(2-nitrophenyl)methoxy]phenyl]methylidene]-[1,2,4]thiadiazolo[4,5-a]pyrimidin-7-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H21N5O6S2
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