What alcohol(s) could be used to produce each of the following compounds?

Enter the IUPAC names of the alcohol(s). If there are more than one alcohol, enter them separated with commas.
1.CH3-CH2-O-CH2-CH3
2.CH3-CH2-C=CH-CH3
..........|
..........CH3.

3.pentagon with a double bond between 2nd and 3rd position with a methyl on position 2

To determine the alcohol(s) that can be used to produce each of the given compounds, we need to consider the functional group present in each compound and identify the corresponding alcohol.

1. Compound: CH3-CH2-O-CH2-CH3
This compound has an ether functional group (-O-) between two ethyl (CH3-CH2-) groups. The alcohol that can be used to produce this compound is Ethanol (CH3CH2OH).

2. Compound: CH3-CH2-C=CH-CH3
|
CH3
This compound has an alkene functional group (C=C) between the two ethyl (CH3-CH2-) groups. The alcohol that can be used to produce this compound is 2-Butanol (CH3CH2CHOHCH3).

3. Compound: Pentagon with a double bond between the 2nd and 3rd position with a methyl on position 2.
To accurately determine the IUPAC name and corresponding alcohol for this compound, a structural diagram or systematic name is required. Please provide further details or a diagram to assist with the answer.