You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[6-[(2,6-dimethylpyridin-3-yl)methoxy]-4-(trifluoromethyl)-1-benzothiophen-3-yl]ethanol by IUPAC nomenclature, provide its molecular formula.
user
C19H18F3NO2S
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