1-(4-Methoxycinnamoyl)-4-(5-phenyl-4-oxo-2-oxazolin-2-yl)piperazine 51314-69-3 Piperazine, 1-(4,5-dihydro-4-oxo-5-phenyl-2-oxazolyl)-4-(3-(4-methoxyphenyl)-1-oxo-2-propenyl)-