InChI=1S/C20H28N2O6/c23-18(4-3-5-19(24)25)21-15(13-22-8-1-2-9-22)20(26)14-6-7-16-17(12-14)28-11-10-27-16/h6-7,12,15,20,26H,1-5,8-11,13H2,(H,21,23)(H,24,25)/t15-,20-/m1/s1