(S)-2-(3-{2-[[2-(2-Amino-6-oxo-1,6-dihydro-purin-9-yl)-ethanoyl]-(2-{2-[[2-(6-amino-purin-9-yl)-ethanoyl]-(2-benzyloxycarbonylamino-ethyl)-amino]-ethanoylamino}-ethyl)-amino]-ethanoylamino}-propanoylamino)-5-guanidino-pentanoic acid methyl ester AIDS-071513 AIDS071513 Z-PNA(A)-PNA(G)-NH(CH2)2COArgOMe