Question

2-метил-3-этилоктин-4​

Answer 1

H3C-CH(CH3)-CH(C2H5)-C≡C-CH2-CH2-CH3

Answer 2

I believe you've provided a chemical name, but it seems to be incomplete or written in a way that is not entirely clear. A chemical name typically describes the structure of a specific compound using a specific nomenclature system, such as IUPAC (International Union of Pure and Applied Chemistry) naming.

Please provide the complete and accurate chemical name, and I'll do my best to assist you with any information or questions you may have about the compound.