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system
Provide the molecular formula for the IUPAC named substance 4-[(2Z)-2-[(E)-3-[1,1-dimethyl-6-sulfo-3-(4-sulfobutyl)benzo[e]indol-3-ium-2-yl]prop-2-enylidene]-1,1-dimethylbenzo[e]indol-3-yl]butane-1-sulfonate;sulfur trioxide .
user
C39H44N2O12S4
assistant