For the given structure,which end should be a | vedclass

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(A) The structure is $CH_3-CH_2-CH(CH_2CH_3)-C(CH_3)_2-CH_2-CH_2-CH_3$.$(i)$ If numbering starts from the left end,the substituents are at positions $

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Left end

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(A) The structure is $CH_3-CH_2-CH(CH_2CH_3)-C(CH_3)_2-CH_2-CH_2-CH_3$.$(i)$ If numbering starts from the left end,the substituents are at positions $3$ (ethyl) and $4,4$ (dimethyl). The name is $3$-ethyl-$4,4$-dimethylheptane.$(ii)$ If numbering starts from the right end,the substituents are at positions $4,4$ (dimethyl) and $5$ (ethyl). The name is $5$-ethyl-$4,4$-dimethylheptane.According to the $IUPAC$ rules,the set of locants $(3, 4, 4)$ is preferred over $(4, 4, 5)$ because $3 < 4$. Therefore,the numbering must start from the left end.

For the given structure,which end should be assigned the number $1$?

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