InChI=1S/C33H38N4O7/c1-7-20-19(6)32(42)37-27(20)14-26-18(5)23(10-12-31(40)41)29(36-26)15-28-22(9-11-30(38)39)17(4)25(35-28)13-24(34)16(3)21(8-2)33(43)44/h7-8,13-14,35-36H,1-2,9-12,15,34H2,3-6H3,(H,37,42)(H,38,39)(H,40,41)(H,43,44)/b21-16?,24-13-,27-14-