2-Oxo-2H-chromen-4-yl 4-tert-butyl­benzoate

In the title mol­ecule, C(20)H(18)O(4), the three methyl groups of the tert-butyl substituent show rotational disorder. Each methyl group is split over three positions, with refined site-occupation factors of 0.711 (4), 0.146 (3) and 0.144 (4). The benzene ring of the benzoate group is oriented at a dihedral angle of 60.70 (7)° with respect to the planar chromene ring [maximum deviation = 0.046 (2) Å]. The crystal structure features centrosymmetric R (2) (2)(8) dimers formed via C—H⋯O inter­actions, and these dimeric aggregates are connected by C—H⋯π inter­actions.