O=[N+]([O-])c1ccc2c(c1)nc(Cc1ccc(Cl)cc1)n2C[C@@H]1CCCN2CCCCC12
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?