InChI=1S/C18H26N2O8S/c1-26-15-12-14(13-16(27-2)18(15)28-29(23,24)25)6-7-17(22)20(10-5-8-19)9-3-4-11-21/h6-7,11-13H,3-5,8-10,19H2,1-2H3,(H,23,24,25)