RESUMO
In the title compound, C20H27NO6, the amide moiety is essentially planar, with a maximum deviation of 0.073â (3)â Å, and one of the N-methyl groups shows rotational disorder. The five-membered 1,3-dioxolane ring adopts an envelope form, with the C atom bonded to the olefin side chain as the flap, which deviates from the mean plane through the other four atoms by 0.564â (7)â Å. The 1,3-dioxole ring fused to the benzene ring adopts a flattened envelope form, with the C atom between the two O atoms as the flap, which deviates from the mean plane through the other four atoms by 0.215â (7)â Å. The C-C=C-C olefin moiety is essentially planar and makes a dihedral angle of 87.1â (3)° with the benzene ring. An intra-molecular O-Hâ¯O hydrogen bond supports the mol-ecular conformation, enclosing an S(11) graph-set motif. In the crystal, inter-molecular C-Hâ¯O hydrogen bonding links the mol-ecules into a tape running along the b axis. Furthermore, other weak C-Hâ¯O hydrogen bonds and a C-Hâ¯π inter-action connect the tapes into a sheet structure parallel to (100).