InChI=1S/C27H38O8/c1-2-3-4-6-10-15-20(28)16-11-8-5-7-9-13-19-14-12-17-21(18-19)34-27-24(31)22(29)23(30)25(35-27)26(32)33/h2,4,6,10,12,14-15,17-18,20,22-25,27-31H,1,3,5,7-9,11,13,16H2,(H,32,33)/b6-4+,15-10+