2-乙炔四氢-2,6,6-三甲基-2H-吡喃

2-hydroxy-2,6,6-trimethyltetrahydropyran

3,7-二甲基-6-辛烯-1-炔基-3-醇

2-hydroxy-2,6-dimethyl-hept-5-enoic acid