Question

2,2,3,4,4 пентаметилпентан​

Answer 1

Ответ:

Н3С-С(СН3)2-СН(СН3)-С(СН3)2-СН3

Там где (СН3) вот так тип рисуй вверх и вниз относительно основной цепи ( зависит от кол-ва заместителей

Answer 2

"2,2,3,4,4 пентаметилпентан" appears to be a chemical name. However, it seems to be incomplete or contain errors, as the term "пентаметилпентан" is repeated twice in the sequence. If you provide the correct and complete chemical name or any additional information, I'll be glad to assist you further.