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-[6-(4-methyl-2-thiophen-2-yl-1,3-thiazol-5-yl)pyridazin-3-yl]sulfanyl-N-[3-(trifluoromethyl)phenyl]acetamide is given. What is its corresponding molecular formula?
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C21H15F3N4OS3
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