You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[(2-methyl-7-phenyl-[1,3]thiazolo[4,5-d]pyridazin-4-yl)sulfanyl]-1-(4-methylpiperidin-1-yl)ethanone into its molecular formula.
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C20H22N4OS2
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