You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule ethyl 2-[5-[(2R)-1-(4-chloro-2-fluoroanilino)-1-oxopropan-2-yl]sulfanyl-4-methyl-1,2,4-triazol-3-yl]acetate .
user
C16H18ClFN4O3S
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