InChI=1S/C15H14O9S/c16-8-4-11(18)9-6-14(24-25(20,21)22)15(23-13(9)5-8)7-1-2-10(17)12(19)3-7/h1-5,14-19H,6H2,(H,20,21,22)/t14-,15-/m1/s1