CC(C)Nc1cc(N2CCN(C3CCCCC3)CC2)c2noc3c2c1C(=O)c1ccccc1-3
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. Amide C-N bonds are not counted because of their high barrier to rotation.  How many rotatable bonds does the molecule have?