InChI=1/C18H27NO4S/c1-17(2,3)14-10-12(11-15(16(14)20)18(4,5)6)9-13-7-8-19(21)24(13,22)23/h9-11,20-21H,7-8H2,1-6H3/b13-9+ 6356E5FA2E5CB6CB