The IUPAC name of the following compound is :
1
2-Carboxy-5-methoxycarbonylhexane.
2
Methyl-6-carboxy-2,5-dimethylhexanoate.
3
Methyl-5-carboxy-2-methylhexanoate.
4
6-Methoxycarbonyl-2,5-dimethylhexanoic acid.
The IUPAC name of the following compound is :