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What is the molecular formula of the compound with this IUPAC name 3-butyl-2-[(E,3E)-3-[1-[(2,4-difluorophenyl)methyl]-1,3-dimethylbenzo[e]indol-2-ylidene]prop-1-enyl]-1,3-benzothiazol-3-ium ?
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C35H33F2N2S+
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