InChI=1/C20H25NO3/c1-3-4-5-6-9-16-12-13-20(18(23)14-16)24-19-11-8-7-10-17(19)21-15(2)22/h7-8,10-14,23H,3-6,9H2,1-2H3,(H,21,22)/f/h21H 7EFFE9525F8E2C90