InChI=1S/C22H23N3O6S/c26-14-19(15-4-2-1-3-5-15)22(27)24-10-16-12-25(13-17(16)11-24)32(28,29)18-8-20-21(23-9-18)31-7-6-30-20/h1-5,8-9,19,26H,6-7,10-14H2/t19-/m1/s1