You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2-[[5-[(1S,2R)-2-(4-chlorophenyl)cyclopropyl]-4-ethyl-1,2,4-triazol-3-yl]sulfanyl]-1-[(5S)-5-hydroxy-3-methyl-5-(trifluoromethyl)-4H-pyrazol-1-yl]ethanone by IUPAC nomenclature, provide its molecular formula.
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C20H21ClF3N5O2S
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