Draw the condensed structural formula of the molecule shown below:

Condensed structural formula: CH2=CH-CH2-CH2-CH2-CH3.

Condensed structural formula: CH2=CH-CH=CH-CH2-CH3.

Condensed structural formula: CH3-CH2-CH2-CH2-CH2-CH3.

Condensed structural formula: CH3-CH=CH-CH2-CH2-CH3.