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