1-[[8-[[2-[2-[3-[2-[2-[2-[[4-[2-[2-[3-[[4-[[4-[(2-amino-4-oxo-3H-pteridin-6-yl)methyl-[[3-(3-carboxypropanoyloxymethoxycarbonyl)-4-[(2-oxo-1,3,2lambda5-dioxaphosphinan-2-yl)oxy]phenyl]methoxycarbonyl]amino]benzoyl]amino]-4-carboxybutanoyl]amino]propoxy]ethoxy]ethylamino]-2-[[2-[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]acetyl]amino]-4-oxobutanoyl]amino]ethoxy]ethoxy]ethoxy]propanoylamino]ethylamino]-2-oxoethyl]disulfanyl]-7-(carboxymethyldisulfanyl)-3-oxo-1,5-dihydro-2,4,3lambda5-benzodioxaphosphepin-3-yl]oxymethyl]-6-fluoro-2-[4-(2-fluorophenyl)phenyl]-3-methylquinolin-1-ium-4-carboxylic acid