InChI=1S/C17H26N2O3S/c1-3-5-12(6-4-2)17(20)19-15-9-13-7-8-16(23(18,21)22)11-14(13)10-15/h7-8,11-12,15H,3-6,9-10H2,1-2H3,(H,19,20)(H2,18,21,22)/t15-/m1/s1