InChI=1S/C20H32O10S/c1-2-3-4-6-14(27-23)9-11-17-16(18-13-19(17)29-28-18)8-5-7-15(10-12-20(21)22)30-31(24,25)26/h5,7,9,11,14-19,23H,2-4,6,8,10,12-13H2,1H3,(H,21,22)(H,24,25,26)/b7-5-,11-9+