InChI=1/C20H23NO4/c1-10(2)8-21-17(22)7-16-12(4)15-6-14-11(3)9-24-18(14)13(5)19(15)25-20(16)23/h6,9-10H,7-8H2,1-5H3,(H,21,22)/f/h21H E178FCC8A6A5C32A