InChI=1S/C20H32O7S/c1-13-7-9-17-19(3,10-5-11-20(17,4)18(22)23)15(13)8-6-14(2)16(12-21)27-28(24,25)26/h15-17,21H,1-2,5-12H2,3-4H3,(H,22,23)(H,24,25,26)