You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-(3,4-dimethoxyphenyl)-N-[5-[2-[(4-methyl-1,3-thiazol-2-yl)amino]-2-oxoethyl]sulfanyl-1,3,4-thiadiazol-2-yl]acetamide into its molecular formula.
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C18H19N5O4S3
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