CCc1cccc(C(C)C)c1NC1=C([n+]2ccc(C)cc2)C(=O)c2ccccc2C1=O.[O-][Cl+3]([O-])([O-])[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?