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