InChI=1S/C22H26N2O3S/c1-4-14(2)8-5-6-9-19-16-12-17(16)21-20(10-7-11-24(19)21)28-13-18(22(26)27)23-15(3)25/h4-11,16-19H,12-13H2,1-3H3,(H-,23,25,26,27)/p+1/b8-5+,9-6+,14-4+/t16-,17+,18+,19+/m1/s1