InChI=1S/C18H22O11S/c1-8-11-13(29-30(22,23)24)12(26-9(2)19)10(17(21)25-4)6-5-7-18(3)15(28-18)14(11)27-16(8)20/h6,11-15H,1,5,7H2,2-4H3,(H,22,23,24)/b10-6+