InChI=1S/C19H23NO7S/c1-2-3-10-27-15-6-4-14-12-16(7-5-13(14)11-15)28(25,26)20-17(19(23)24)8-9-18(21)22/h4-7,11-12,17,20H,2-3,8-10H2,1H3,(H,21,22)(H,23,24)/t17-/m0/s1