1 EAR Ethyl 2-[2-(4-chlorophenyl)-7-methyl-5-oxidanylidene-imidazo[1,2-a]pyrimidin-8-yl]ethanoate 1.000 2 YAQ (4s)-2-(4-chlorophenyl)-7-methyl-8-pentylimidazo[1,2-a]pyrimidin-5(8h)-one 0.741