3H-Indolium, 2-[3-[1-[5-[[4-[[9-[5-deoxy-5-[[2-[[9-[5-O-(thymidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxy-5′-guanylyl)-β-D-ribofuranosyl]-9H-purin-6-yl]amino]ethyl]amino]-β-D-ribofuranosyl]-9H-purin-6-yl]amino]butyl]amino]-5-oxopentyl]-1,3-dihydro-3,3-dimethyl-5-sulfo-2H-indol-2-ylidene]-1-prop...