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