You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-[4-[[2-propan-2-yl-4,7-bis(sulfanylidene)imidazo[4,5-d]pyridazin-3-yl]methyl]phenyl]benzoic acid ?
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C22H18N4O2S2
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