InChI=1S/C12H16Cl2O7S/c1-20-9-3-7(2-8(15)5-9)4-10(21-22(17,18)19)6-11(16)12(13)14/h2-3,5,10-12,15-16H,4,6H2,1H3,(H,17,18,19)