1-(2,4-cyclopentadien-1-ylidene)-N,N-dimethylethanamine

4-methylideneazulen-3a-ol

cis,cis-4,4,9,9-Tetramethoxy-Δ1,6-cyclodecadien

(4aα,8aα)-9,9-dichloro-1,4,5,8-tetrahydro-4a,8a-methanonaphthalene

4-methyl-1-azulene carboxylic acid