You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-(4-ethoxyphenyl)-2-[[5-(2-fluorophenyl)-4-methyl-1,2,4-triazol-3-yl]sulfanyl]acetamide into molecular formula.
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C19H19FN4O2S
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