InChI=1S/C17H24O9S/c1-4-12(2)15(26-27(21,22)23)16(20)25-13(17(3)11-24-17)9-7-5-6-8-10-14(18)19/h5-10,12-13,15H,4,11H2,1-3H3,(H,18,19)(H,21,22,23)/b6-5-,9-7+,10-8+