(-)-isoanantine 2-Pyrrolidinone, 4-(1-methyl-1H-imidazol-5-yl)-3-(phenylmethylene)-, (3E,4S)- 2-Pyrrolidinone, 4-(1-methyl-1H-imidazol-5-yl)-3-(phenylmethylene)-, (S-(E))- 50656-85-4 Isoanantine