InChI=1S/C19H28O7S/c1-3-4-5-6-7-8-17(26-27(22,23)24)14-16(20)11-9-15-10-12-18(21)19(13-15)25-2/h3,10,12-13,17,21H,1,4-9,11,14H2,2H3,(H,22,23,24)