InChI=1S/C18H28O7S/c1-2-3-4-5-6-7-15(19)13-16(20)10-8-14-9-11-17(21)18(12-14)25-26(22,23)24/h9,11-12,15,19,21H,2-8,10,13H2,1H3,(H,22,23,24)