InChI=1S/C11H12O10S2/c12-11-4-2-8(19-11)5-7-1-3-9(20-22(13,14)15)10(6-7)21-23(16,17)18/h1,3,6,8H,2,4-5H2,(H,13,14,15)(H,16,17,18)/t8-/m1/s1