O=C(O)[C@H]1CCCN1C(=O)c1ccccc1N1C(=O)[C@@H]2Cc3c([nH]c4ccccc34)C(c3cccc(Cl)c3)N2C1=O
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. How many bonds in the molecule are rotatable?