CC1=C(C(=O)Nc2ccccc2)C(c2ccc(C3C(C(=O)Nc4ccccc4)=C(C)NC(C)=C3C(=O)Nc3ccccc3)cc2)C(C(=O)Nc2ccccc2)=C(C)N1
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?