The diagram shows the structure of a compound.
Which functional groups does this molecule contain?
1 )
carboxylic acid: no / alkene: no / alcohol: no
carboxylic acid: no / alkene: yes / alcohol: yes
3 )
carboxylic acid: yes / alkene: no / alcohol: yes
4 )
carboxylic acid: yes / alkene: yes / alcohol: yes
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