CCN1C(=O)C2C(C1=O)N1C(c3ccccc3)C3C(=O)N(CC)C(=O)C3N1C2c1ccccc1
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?