You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-butan-2-yl-N-[2-[2-(3,4-dimethoxyphenyl)ethyl-(thiophen-2-ylmethyl)amino]-2-oxoethyl]-3-methylbutanamide into its molecular formula.
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C26H38N2O4S
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