InChI=1/C19H23NO3/c21-19(22)11-13-20-12-4-14-23-18-9-7-17(8-10-18)15-16-5-2-1-3-6-16/h1-3,5-10,20H,4,11-15H2,(H,21,22)/f/h20H 6C676F4BAB7F3ADD