InChI=1S/C19H22N2O5S/c1-12-6-4-5-7-15(12)10-17(22)21-16-8-13(2)19(14(3)9-16)27(25,26)20-11-18(23)24/h4-9,20H,10-11H2,1-3H3,(H,21,22)(H,23,24)