InChI=1S/C33H36N4O7/c1-7-19-18(6)31(41)37-26(19)13-24-16(4)21(9-10-30(39)40)27(34-24)14-28-22(11-29(38)33(43)44)17(5)23(35-28)12-25-15(3)20(8-2)32(42)36-25/h7-8,12-13,29,34-35,38H,1-2,9-11,14H2,3-6H3,(H,36,42)(H,37,41)(H,39,40)(H,43,44)/b25-12-,26-13-