(3-cyanopyrazolo[1,5-a]pyrido[3,4-e]pyrimidin-6-yl)methyl acetate InChI=1/C13H9N5O2/c1-8(19)20-7-11-10-6-16-13-9(4-14)5-17-18(13)12(10)2-3-15-11/h2-3,5-6H,7H2,1H pyrazolo[1,5-a]pyrido[3,4-e]pyrimidine-3-carbonitrile, 6-[(acetyloxy)methyl]-