InChI=1S/C23H27N3O8S/c24-18(23(33)34)11-12-20(29)26-19(22(32)25-14-21(30)31)16-35-15-17(28)10-8-6-4-2-1-3-5-7-9-13-27/h7-10,17-19,27-28H,11-16,24H2,(H,25,32)(H,26,29)(H,30,31)(H,33,34)/b9-7-,10-8+