InChI=1S/C14H16O8S/c15-13(16)11-9-7-5-3-1-2-4-6-8-10-12(14(17)18)22-23(19,20)21/h1-9,11-12H,10H2,(H,15,16)(H,17,18)(H,19,20,21)/b3-1+,4-2-,7-5+,8-6+,11-9-