5,5',5'',5'''-(1,4,8,11-Tetraazacyclotetradecane-1,4,8,11-tetrayl)tetrakis(N-benzylpentan-1-amine)benzyl(5-{4,8,11-tris[5-(benzylamino)pentyl]-1,4,8,11-tetraazacyclotetradecan-1-yl}pentyl)amine AIDS-073006 AIDS073006 Tetraazamacrocycle