1,2,3-Triazolo(4',5':5,6)pyrido(2,1-b)quinazolin-11(1H)-one, 9-(1-methylethoxy)- 126861-34-5 9-(1-Methylethoxy)-1,2,3-triazolo(4',5':5,6)pyrido(2,1-b)quinazolin-11(1H)-one