InChI=1S/C22H23N3O5S/c1-22(28)16-4-2-3-5-18(16)23-20(22)19-15-12-14(6-7-17(15)24-21(19)27)31(29,30)25-10-8-13(26)9-11-25/h2-7,12-13,23,26,28H,8-11H2,1H3,(H,24,27)/b20-19-/t22-/m0/s1