InChI=1S/C35H38N4O4/c1-8-23-18-36-28(19(23)4)15-29-21(6)25(11-13-34(40)41)32(38-29)17-33-26(12-14-35(42)43)22(7)30(39-33)16-31-24(9-2)20(5)27(10-3)37-31/h8-10,15-18,27,36,39H,1-3,11-14H2,4-7H3,(H,40,41)(H,42,43)/b29-15-,30-16-,33-17-