You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [2-[(4-cyclopropyl-3-ethoxycarbonylthiophen-2-yl)amino]-2-oxoethyl] 5-(pyrazol-1-ylmethyl)furan-2-carboxylate into its molecular formula.
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C21H21N3O6S
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