4-(4,5,7,8,9,10-hexahydro-7,7,10,10-tetramethyl-1-(3-pyridylmethyl)anthra-(1,2-b)pyrrol-3-yl)benzoic acid
4-(4,5,7,8,9,10-hexahydro-7,7,10,10-tetramethyl-1-(3-pyridylmethyl)anthra-(1,2-b)pyrrol-3-yl)benzoic acid