Diethyl 7,8,18,19-tetramethyl-2,13-dioxohexacyclo[10.10.2.03,24.05,10.014,23.016,21]tetracosa-5,7,9,16,18,20-hexaene-23,24-dicarboxylate

Abstract

The asymmetric unit of the title compound, C30H34N4O6, contains two independent molecules. In one independent molecule, the two ethoxycarbonyl groups are each disordered over two conformations with occupancy ratios of 0.586 (2):0.414 (2) and 0.508 (2):0.492 (2). The crystal packing exhibits weak intermolecular C—H...O hydrogen bonds.