Acta Cryst. (2014). E70, o38-o39 [ doi:10.1107/S1600536813032467 ]
Abstract: In the title compound, C39H38N4O8, the quinoxaline and indene subunits are essentially planar, with maximum deviations of 0.071 (2) and 0.009 (2) Å, respectively. The indenoquinoxaline system forms a dihedral angle of 72.81 (3)° with the chromenopyrrolizine system. The two dioxolane rings, as well as the pyran ring of the chromeno group and the terminal pyrrolizine, each adopt an envelope conformation with O and C as flap atoms. The central pyrrolizine ring adopts a twisted conformation. Intramolecular C-HO and C-HN hydrogen bonds occur. The crystal structure exhibits C-HO hydrogen bonds, and is further stablized by C-H interactions, forming a two-dimensional network along the bc plane.
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