InChI=1/C20H22N4O4/c1-12-4-6-16(8-14(12)3)23-11-15(9-19(23)25)21-20(26)22-18-10-17(24(27)28)7-5-13(18)2/h4-8,10,15H,9,11H2,1-3H3,(H2,21,22,26)/t15-/m0/s1/f/h21-22H D0A7339EC44437D4