You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[[2-[[cyclopentylmethyl-[2-fluoro-4-(2-methoxyethoxy)phenyl]carbamoyl]amino]-1,3-thiazol-5-yl]sulfanyl]acetic acid into molecular formula.
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C21H26FN3O5S2
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