InChI=1/C19H18N4O4/c1-10-7-11(2)23-18(20-10)21-16(22-23)17(25)26-12-5-6-13-14(24)9-19(3,4)27-15(13)8-12/h5-8H,9H2,1-4H3 A120C35FEE471A16