70169-91-4 InChI=1/C12H10N4O3/c1-3-19-12(18)10-9(7(2)17)6-14-11-8(4-13)5-15-16(10)11/h5-6H,3H2,1-2H ethyl 6-acetyl-3-cyanopyrazolo[1,5-a]pyrimidine-7-carboxylate pyrazolo[1,5-a]pyrimidine-7-carboxylic acid, 6-acetyl-3-cyano-, ethyl ester