1-(5-carboxypentyl)-3,3-dimethyl-2-[3-(7-N,N-diethylamino-2-(1,1-dimethylethyl)-4H-benzopyran-4-ylidene)-1-propenyl]-3H-indolium-5-sulfonate;2-[3-(11-tert-butyl-2,3,6,7-tetrahydro-1H,5H-pyrano[2,3-f]pyrido[3,2,1-ij]quinolin-12-ium-9-yl)prop-2-en-1-ylidene]-1-(5-carboxypentyl)-3,3-dimethylindoline-5-sulfonate