InChI=1S/C15H14O9S/c16-8-4-11(18)9-6-12(19)15(23-13(9)5-8)7-1-2-10(17)14(3-7)24-25(20,21)22/h1-5,12,15-19H,6H2,(H,20,21,22)/t12-,15-/m1/s1