InChI=1S/C27H35NO10/c1-27(2,38-26-23(32)21(30)22(31)24(37-26)25(33)34)15-28-20(29)11-9-7-5-3-4-6-8-10-17-12-13-18-19(14-17)36-16-35-18/h5,7-14,21-24,26,30-32H,3-4,6,15-16H2,1-2H3,(H,28,29)(H,33,34)/b7-5+,10-8+,11-9+