InChI=1/C21H26N4O4/c1-21(2,3)17-6-5-16(12-18(17)25(27)28)20(26)23-14-15-4-7-19(22-13-15)24-8-10-29-11-9-24/h4-7,12-13H,8-11,14H2,1-3H3,(H,23,26)/f/h23H BE21E1832B435786