endo-10-benzoyl-4-phenyl-4,10-diazatricyclo<5.2.1.02,6>dec-8-ene-3,5-dione

exo-10-benzoyl-4-phenyl-4,10-diazatricyclo(5.2.1.02,6)dec-8-ene-3,5-dione

吡咯

carbon monoxide

1,4,ditritiobenzene