21-(2-{2-[2-(Bis-ethoxycarbonylmethyl-amino)-ethoxy]-ethoxy}-ethylcarbamoyl)-henicosa-10,12-diynoic acid

[9-(2-{2-[21-(2-{2-[2-(Bis-ethoxycarbonylmethyl-amino)-ethoxy]-ethoxy}-ethylcarbamoyl)-henicosa-10,12-diynoylamino]-ethylcarbamoyl}-phenyl)-6-diethylamino-xanthen-3-ylidene]-diethyl-ammonium

[Ethoxycarbonylmethyl-(2-{2-[2-(21-{2-[(2-oxo-2H-chromene-3-carbonyl)-amino]-ethylcarbamoyl}-henicosa-10,12-diynoylamino)-ethoxy]-ethoxy}-ethyl)-amino]-acetic acid ethyl ester