COC(=O)C(CC(C)C)NC(=O)C(Cc1ccccc1)NC(=O)C1CCCN1C(=O)C(CO)NC(=O)c1ccc(-c2ccc(Cl)cc2Cl)o1
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?