1,3-Dichloro-5,8-dihydro-5,8-methanoisoquinoline

5,8-Methano-5,6,7,8-tetrahydroisoquinolin-7-one

4-Aza-tricyclo[6.2.1.02,7]undeca-6,9-diene-3,5-dione

(1S,4R)-3-[1-Carbamoyl-meth-(Z)-ylidene]-bicyclo[2.2.1]hept-5-ene-2-carboxylic acid