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-[[4-(2-chloro-5-ethylphenyl)-5-(difluoromethyl)-1,2,4-triazol-3-yl]sulfanyl]acetic acid into molecular formula.
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C13H12ClF2N3O2S
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