You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-methoxy-N-[(Z)-3-(2-methylbutan-2-ylamino)-3-oxo-1-thiophen-2-ylprop-1-en-2-yl]benzamide into its molecular formula.
user
C20H24N2O3S
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