InChI=1S/C19H23NO5/c1-20-18(25-2)19(24,14-11-7-4-8-12-14)15(16(21)17(22)23)13-9-5-3-6-10-13/h3-12,15-16,18,20-21,24H,1-2H3,(H,22,23)