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