You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule ethyl 2-[[2-chloro-3-(trifluoromethyl)benzoyl]amino]-6,7-dihydro-4H-thieno[3,2-c]pyran-3-carboxylate into molecular formula.
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C18H15ClF3NO4S
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