InChI=1S/C26H30N4O3/c1-33-25(32)23(29-24(31)17-22-8-5-15-30(18-22)26(27)28)16-21-13-11-20(12-14-21)10-9-19-6-3-2-4-7-19/h2-4,6-7,11-14,22-23H,5,8,15-18H2,1H3,(H3,27,28)(H,29,31)/t22-,23+/m1/s1