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What is the molecular formula of the compound with this IUPAC name 2-[(E)-2-[2-[4-[2-(but-2-ynylcarbamothioylamino)ethyl]phenoxy]-3-[(2E)-2-(3-ethyl-1,1,7-trimethylbenzo[e]indol-2-ylidene)ethylidene]cyclohexen-1-yl]ethenyl]-3-ethyl-1,1-dimethylbenzo[e]indol-3-ium-7-sulfonic acid ?
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C56H61N4O4S2+
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