InChI=1S/C17H19NO8S/c19-13-4-1-12(2-5-13)3-6-16(21)18-11-15(26-27(23,24)25)17(22)9-7-14(20)8-10-17/h1-2,4-5,7-10,15,19,22H,3,6,11H2,(H,18,21)(H,23,24,25)