You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 3-[[4-(cyclohexylmethyl)-1,3-thiazol-2-yl]-[(5-ethylthiophen-2-yl)methyl]amino]propanoic acid into molecular formula.
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C20H28N2O2S2
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