1,2,4-Oxadiazolidin-5-one, 4-(3-chlorophenyl)-2,3-diphenyl- 1,2,4-Oxadiazolidin-5-one, 4-(m-chlorophenyl)-2,3-diphenyl- 4-(m-Chlorophenyl)-2,3-diphenyl-1,2,4-oxadiazolidin-5-one 73806-21-0 NSC102898