InChI=1S/C19H26N2O5S/c1-14(5-10-18(22)20-11-12-27(24,25)26)13-15(2)19(23)16-6-8-17(9-7-16)21(3)4/h5-10,13,15H,11-12H2,1-4H3,(H,20,22)(H,24,25,26)/b10-5+,14-13+/t15-/m1/s1