CCOC(=O)C1=C(C)N(c2ccc(Cl)cc2)C2(O)C=CC(O)=C3C(=O)c4ccccc4C(=O)C312
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?