COc1ccccc1C1C=C(c2ccc(Cl)cc2)Nc2nc(N3C(=O)CCC3=O)nn21
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?