CCCCN1CC(=O)N2[C@H](c3ccc(OC)cc3)[C@@H]3C(=O)N(CC)C(=O)[C@@H]3[C@]2(Cc2ccccc2)C1=O
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?