InChI=1S/C18H22O7S/c1-12-15(23-2)11-16(24-3)17(18(12)19)14(25-26(20,21)22)10-9-13-7-5-4-6-8-13/h4-8,11,14,19H,9-10H2,1-3H3,(H,20,21,22)