CC(C)n1c(=O)c2oc3ccccc3c2n(CC(=O)Nc2ccccc2Cl)c1=O
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?