InChI=1S/C31H32N4O4/c1-31(2,16-20-10-13-23(14-11-20)39-28-15-12-21(17-33-28)30(32)37)34-18-22(36)19-38-27-9-5-8-26-29(27)24-6-3-4-7-25(24)35-26/h3-15,17,22,34-36H,16,18-19H2,1-2H3,(H2,32,37)/t22-/m0/s1