2-tert-butyl-1-benzofuran

2,2-dimethylhex-4-en-3-one

ethyl 2-ethenyl-3-hydroxy-3,4,4-trimethylpentanoate

ethyl 5-hydroxy-5,6,6-trimethylhept-2-enoate

2,2,3,4-tetramethylhexane