Crystal structure and DFT calculations of 3,8-diphenyl-3a,4,5,5a,8a,8b-hexahydro-benzo[1,2-d: 3,4-d′]diisoxazole, C20H18N2O2

The near planarity of the two fused isoxazoline rings destabilizes the staggered cyclohexane chair and forces the cyclohexane ring to adopt uncommon conformations.