CC1(C)OC(=O)C(=Cc2ccc(-c3ccc(Cl)c(C(=O)O)c3)o2)C(=O)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?