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