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In the title molecule, C17H20N2O2, the angle between the mean planes of the 3-hydroxyphenyl and cyclohexa-2,4-dien-1-one rings is 10.7 (7)°. Intramolecular N—H...O hydrogen bonding involving the amine H atom and the carbonyl O atom affects the conformation of the molecule. One of the ethyl arms is disordered over two conformations with occupancies of 0.766 (8) and 0.234 (8). Crystal packing is stabilized by intermolecular C—H...O hydrogen bonding between the major component of the disordered ethyl C atom and a nearby carbonyl O atom, and by O—H...O hydrogen bonding between the hydroxyl H atom and the carbonyl O atom. This links the molecules into chains in an alternate inverted pattern, parallel, oblique and diagonal to the bc face of the unit cell.