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system
Provide the molecular formula for the IUPAC named substance 4-[20-(1-methylpyridin-1-ium-4-yl)-15-(1-methylpyridin-4-ylidene)-10-(4-sulfophenyl)-23H-porphyrin-5-yl]benzenesulfonic acid .
user
C44H33N6O6S2+
assistant