InChI=1S/C33H36N4O7/c1-6-19-16(3)26(36-32(19)43)12-24-17(4)21(8-10-30(39)40)28(34-24)14-29-22(9-11-31(41)42)18(5)25(35-29)13-27-20(7-2)23(15-38)33(44)37-27/h6-7,12-13,34-35,38H,1-2,8-11,14-15H2,3-5H3,(H,36,43)(H,37,44)(H,39,40)(H,41,42)/b26-12-,27-13-