InChI=1S/C28H38O13/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-18-15-20(26(37)40-18)28(39,17-22(31)32)27(38)41-23(25(35)36)19(24(33)34)16-21(29)30/h6-7,9-10,13-14,18-20,23,39H,2-5,8,11-12,15-17H2,1H3,(H,29,30)(H,31,32)(H,33,34)(H,35,36)/b7-6-,10-9-,14-13+