InChI=1/C18H17NO5S/c1-2-3-13-24-15-9-11-16(12-10-15)25(22,23)17(18(20)19-21)14-7-5-4-6-8-14/h4-12,17,21H,13H2,1H3,(H,19,20)/t17-/m1/s1/f/h19H 448CC2924826948A