3,8]undeca-3,5,7,9-tetraene,591749-50-7,1H-2,6-Methano-2,7-naphthyridine(9CI)"> 3,8]undeca-3,5,7,9-tetraene,591749-50-7,1H-2,6-Methano-2,7-naphthyridine(9CI)">