title: rac-Diethyl 5-oxo-2-[(2,4,4-trimethyl-pentan-2-yl)amino]-4,5-dihydro-pyrano[3,2-c]chromene-3,4-dicarboxyl-ate.
abstract: The title compound, C(26)H(33)NO(7), comprises a racemic mixture of asymmetric mol-ecules containing one stereogenic centre. The dihedral angle between the mean planes of the fused pyran ring and the coumarin ring system is 8.12 (14)°. The mol-ecular structure features a short N-H⋯O contact, which generates an S(6) ring motif. The crystal packing are stabilized by C-H⋯O inter-actions.
authors.forename: S Antony
authors.initials: SA
authors.lastname: Inglebert
authors.forename: K
authors.initials: K
authors.lastname: Sethusankar
authors.forename: Yuvaraj
authors.initials: Y
authors.lastname: Arun
authors.forename: Paramasivam T
authors.initials: PT
authors.lastname: Perumal