You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named [2-[[3-(trifluoromethyl)phenyl]methylsulfanyl]-4,5-dihydroimidazol-1-yl]-(3,4,5-trimethoxyphenyl)methanone is given. What is its corresponding molecular formula?
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C21H21F3N2O4S
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