The given compound is written in its molecular formula form. The molecular formula represents the amount of each atom in a compound. The empirical formula represents the smallest whole number ratio of each type of atom in a compound.
In the compound, C₆H₁₆N₂, there are 6 carbons, 16 hydrogens, and 2 nitrogens. Because these are all even amounts, you can divide each by 2. As such, the empirical formula is C₃H₈N.