3-(Cinnamylideneamino)-2,7,9-trimethylpyrido(3',2':4,5)thieno(3,2-d)pyrimidin-4(3H)-one 99504-89-9 Pyrido(3',2':4,5)thieno(3,2-d)pyrimidin-4(3H)-one, 3-(cinnamylideneamino)-2,7,9-trimethyl-