1:1 mixture of 1,4,5a,6,7,8,9,9a- and 4,5a,6,7,8,9,9a,10-Octahydro-2,4-bis-(4-chlorophenyl)-3-phenyl-benzo[4,5]imidazo[1,2-a]pyrimidine AIDS-085370 AIDS085370 NSC685485