InChI=1S/C22H22N4O4/c1-15-13-21(26-24-16-3-7-18(28)8-4-16)22(29-2)14-20(15)25-23-17-5-9-19(10-6-17)30-12-11-27/h3-10,13-14,26-27H,11-12H2,1-2H3