InChI=1/C18H18N2O3S/c1-11-16-10-14(6-8-17(16)19-18(11)21)20-24(22,23)15-7-5-12-3-2-4-13(12)9-15/h5-11,20H,2-4H2,1H3,(H,19,21)/t11-/m0/s1/f/h19H B0E61BF15A7F105A