InChI=1S/C19H21NO9S/c1-8(22)20-12(19(26)27)7-30-6-11-13(28-2)4-9-14(16(11)24)15(23)10(5-21)18(29-3)17(9)25/h4,12,21,24H,5-7H2,1-3H3,(H,20,22)(H,26,27)/t12-/m0/s1