You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [2-(N-methylanilino)-1,3-thiazol-4-yl]-(1-methyl-3,4-dihydro-2H-1,5-benzodiazepin-5-yl)methanone into its molecular formula.
user
C21H22N4OS
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