InChI=1S/C17H23NO7S/c19-17(18-9-2-1-3-10-18)15(25-26(20,21)22)6-4-5-13-7-8-14-16(11-13)24-12-23-14/h7-8,11,15H,1-6,9-10,12H2,(H,20,21,22)