InChI=1S/C20H32O7S/c1-6-20(5,23)12-8-11-15(2)9-7-10-16(3)13-18(27-28(24,25)26)14-17(4)19(21)22/h6,10-11,14,18,23H,1,7-9,12-13H2,2-5H3,(H,21,22)(H,24,25,26)/b15-11-,16-10-,17-14-