You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-methyl-5-[(1-methylimidazol-2-yl)sulfanylmethyl]-N-[(2-methylphenyl)methyl]furan-2-carboxamide into molecular formula.
user
C19H21N3O2S
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