1,2,4-Triazin-3(2H)-one, 5,6-bis(4-methoxyphenyl)-2-(3-phenyl-2-propenyl)- 102429-76-5 5,6-Bis(4-methoxyphenyl)-2-(3-phenyl-2-propenyl)-1,2,4-triazin-3(2H)-one