InChI=1/C12H10N4O2/c1-8(17)18-7-10-9-6-14-12-3-5-15-16(12)11(9)2-4-13-10/h2-6H,7H2,1H pyrazolo[1,5-a]pyrido[3,4-e]pyrimidin-6-ylmethyl acetate pyrazolo[1,5-a]pyrido[3,4-e]pyrimidine-6-methanol, acetate (ester)