AIDS-166983 AIDS166983 N-(-)-cis-(Myrtanyl)-N'-(2,2-diphenylethyl)propane-1,2-diamine N2-{[(1S,2R,5S)-6,6-Dimethylbicyclo[3.1.1]hept-2-yl]methyl}-N1-(2,2-diphenylethyl)propane-1,2-diamine cis-(-)-Myrtanylamine analog