28-[2-[2-[2-[2-[[4-[[4-[(2-amino-4-oxo-3H-pteridin-6-yl)methylamino]cyclohexa-2,4-diene-1-carbonyl]amino]-4-carboxybutanoyl]amino]ethoxy]ethylcarbamoylamino]ethoxy]ethoxycarbonyl]-6-butoxycarbonyl-2-tert-butyl-10-[2-(dimethylamino)ethoxycarbonyl]-23-(2-hydroxypropylcarbamoyl)-32-methoxycarbonyl-4,4,5,5,6,8,8,9,9,10,12,12,13,14,16,16,17,19,21,21,22,22,23,25,25,27,27,28,30,30,31,31,32,34,34-pentatriacontamethyl-17-[2-(methyldisulfanyl)ethoxycarbonyl]-2-propyl-19-[2-(pyridin-2-yldisulfanyl)ethoxycarbonyl]pentatriacontanoic acid