2-[[4-[(2-amino-4-oxo-1H-pteridin-6-yl)methylamino]benzoyl]amino]-5-[[1-[[5-carbamimidamido-1-[[3-carboxy-1-[[3-carboxy-1-[[1-carboxy-2-[2-[[[12-ethyl-4-(17-ethyl-17-hydroxy-13-methoxycarbonyl-1,11-diazatetracyclo[13.3.1.04,12.05,10]nonadeca-4(12),5,7,9-tetraen-13-yl)-10,11-dihydroxy-5-methoxy-8-methyl-8,16-diazapentacyclo[10.6.1.01,9.02,7.016,19]nonadeca-2,4,6,13-tetraene-10-carbonyl]amino]carbamoyloxy]ethyldisulfanyl]ethyl]amino]-1-oxopropan-2-yl]amino]-1-oxopropan-2-yl]amino]-1-oxopentan-2-yl]amino]-3-carboxy-1-oxopropan-2-yl]amino]-5-oxopentanoic acid