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The relative stereo- and regiochemistry of the racemic title compound, C 25 H 19 NO 7 , were established from the crystal structure. The fused benzene ring forms dihedral angles of 77.3 (1) and 60.3 (1)° with the hydroxy-substituted benzene ring and the nitro-substituted benzene ring, respectively. The dihedral angle between the hydroxy-substituted benzene ring and the nitro-substituted benzene ring is 76.4 (1)°. An intramolecular O—H...O hydrogen bond closes an  S (6) ring. In the crystal, weak C—H...O hydrogen bonds connect the molecules, forming layers parallel to (100). Within these layers, there are weak π–π stacking interactions with a ring centroid–ring centroid distance of 3.555 (1) Å.

[(1R*,3S*,4S*)-3-(2-Hydroxybenzoyl)-1,2,3,4-tetrahydro-1,4-epoxynaphthalen-1-yl]methyl 4-nitrobenzoate

[(1R,3S,4S*)-3-(2-Hydroxybenzoyl)-1,2,3,4-tetrahydro-1,4-epoxynaphthalen-1-yl]methyl 4-nitrobenzoate