Which is the correct structure of compound 6-bromo-5- chloro - 5 - ethoxycarbonyl-2 -methyl heptanoic acid?

The correct numbering of given compound is as follows:-COOH is here the functional group of highest priority. Ethoxy carbonyl is prefix for the ester locant. Carbon of ester group is not considered in parent chain as it would give a parent chain of six carbons only.