2,2'-((6S,9S,15S,23R,25aS,31S,34S,40S,48R,50aS)-6,31-bis((1H-indol-3-yl)methyl)-23,48-dicarbamoyl-15,40-bis(4-guanidinobutyl)-5,8,11,14,17,25,30,33,36,39,42,50-dodecaoxohexatetracontahydrodipyrrolo[2,1-d1:2',1'-g][1,2,24,25,5,8,11,14,17,20,28,31,34,37,40,43]tetrathiadodecaazacyclohexatetracontine-9,34-diyl)diacetic acid
