4-(1,3a-Diphenyl-4,5-dihydro-3aH-[1,2,4]oxadiazolo[5,4-d][1,5]benzothiazepin-5-yl)phenyl methyl ether 5-(4-Methoxyphenyl)-1,3a-diphenyl-4,5-dihydro-3aH-[1,2,4]oxadiazolo[5,4-d][1,5]benzothiazepine AIDS-146531 AIDS146531 NSC673812