InChI=1S/C14H12O12S3/c15-27(16,17)24-12-5-3-10(4-6-12)1-2-11-7-13(25-28(18,19)20)9-14(8-11)26-29(21,22)23/h1-9H,(H,15,16,17)(H,18,19,20)(H,21,22,23)/b2-1+