InChI=1S/C11H18O6S/c1-10(17-18(14,15)16)8-6-4-2-3-5-7-9-11(12)13/h2-3,7,9-10H,4-6,8H2,1H3,(H,12,13)(H,14,15,16)/b3-2-,9-7+