InChI=1S/C17H17NO8S/c19-12-5-1-10(2-6-12)14(20)9-18-17(21)16-15(25-16)11-3-7-13(8-4-11)26-27(22,23)24/h1-8,14-16,19-20H,9H2,(H,18,21)(H,22,23,24)