Cl.NCCCC[C@H](NC(=O)C1CCNCC1)c1nnc([C@@H](N)Cc2ccc(O)cc2)o1
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?