1,2,5,6-Tetradeoxy-2,5-bis{[((1S,3S)-2,2-dimethyl-3-{[methyl(pyridin-2-ylmethyl)amino]carbonyl}cyclopropyl)carbonyl]amino}-1,6-diphenyl-L-iditol AIDS-060251 AIDS060251 Cyclopropane deriv.