InChI=1S/C21H24N2O4S/c1-14(21(26)27)22-19(24)17(12-15-8-4-2-5-9-15)23-20(25)18(28)13-16-10-6-3-7-11-16/h2-11,14,17-18,28H,12-13H2,1H3,(H,22,24)(H,23,25)(H,26,27)/t14-,17-,18+/m0/s1