You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-(4-cyano-2-methylpyrazol-3-yl)-2-[[5-(phenylsulfanylmethyl)-4-prop-2-enyl-1,2,4-triazol-3-yl]sulfanyl]butanamide by IUPAC nomenclature, provide its molecular formula.
user
C21H23N7OS2
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