InChI=1S/C19H25NO4/c21-17-8-4-7-14-11-20(12-16(14)17)18(22)10-15(19(23)24)9-13-5-2-1-3-6-13/h1-3,5-6,14-17,21H,4,7-12H2,(H,23,24)