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-[[8-chloro-6-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]pyridin-3-yl]sulfanyl]acetyl]amino]-N-(2,4,6-trimethylphenyl)acetamide into molecular formula.
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C20H19ClF3N5O2S
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