3d image of azepine skeletal formula

azepine azacycloheptatriene unsaturated heterocycles tautomer isomer stereoisomer orbital structure activity relationship sar racemate diene synthesis adducts tetracyanoethylene antidepressant substance matter material compound component agent stuff reagent functional group precursor reaction production building block molecule molecular formula skeletal structural structure geometry ball stick atom 3d aromatic aromaticity macrocyclic heterocyclic heterocycle polycyclic ring nitrogen azo