InChI=1S/C16H17NO8S/c1-11(18)24-13-7-8-15(19)17(10-13)16(20)14(25-26(21,22)23)9-12-5-3-2-4-6-12/h2-8,13-14H,9-10H2,1H3,(H,21,22,23)