InChI=1/C18H21NO5S/c1-12(2)17(18(20)21)19-25(22,23)16-10-6-14(7-11-16)13-4-8-15(24-3)9-5-13/h4-12,17,19H,1-3H3,(H,20,21)/p-1/t17-/m0/s1/fC18H20NO5S/q-1 3109F47B6110C4B0