InChI=1S/C19H25NO4/c21-17-8-4-3-5-13(17)9-16(19(23)24)10-18(22)20-11-14-6-1-2-7-15(14)12-20/h3-5,8,14-16,21H,1-2,6-7,9-12H2,(H,23,24)