InChI=1S/C20H23NO5/c1-24-17-8-5-15(13-19(17)26-3)10-11-21-20(23)9-6-14-4-7-16(22)18(12-14)25-2/h4-9,12-13,22H,10-11H2,1-3H3,(H,21,23)