You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-(1,3-benzoxazol-2-ylsulfanylmethyl)-N-[(4,5-dimethyl-1,3-oxazol-2-yl)methyl]benzamide into its molecular formula.
user
C21H19N3O3S
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