InChI=1S/C13H14O6S/c1-7-2-4-8(5-3-7)20(14,15)19-12-11-10(18-11)9-6-16-13(12)17-9/h2-5,9-13H,6H2,1H3/t9-,10+,11-,12-,13+/m1/s1