InChI=1S/C17H23NO7S/c19-17(18-8-2-1-3-9-18)7-5-14(25-26(20,21)22)10-13-4-6-15-16(11-13)24-12-23-15/h4,6,11,14H,1-3,5,7-10,12H2,(H,20,21,22)