1,3,4-Oxadiazol-2(3H)-one, 3-(((2-methoxyphenyl)amino)methyl)-5-(3,4,5-trimethoxyphenyl)- 3-(((2-Methoxyphenyl)amino)methyl)-5-(3,4,5-trimethoxyphenyl)-1,3,4-oxadiazol-2(3H)-one 73484-41-0