InChI=1S/C27H37NO10/c1-16(2)14-28-21(29)10-6-5-9-18(37-27-24(32)22(30)23(31)25(38-27)26(33)34)8-4-3-7-17-11-12-19-20(13-17)36-15-35-19/h3,5,7,9,11-13,16,18,22-25,27,30-32H,4,6,8,10,14-15H2,1-2H3,(H,28,29)(H,33,34)/b7-3+,9-5+