CC(C)[C@@H]1CC[C@@H](C)C[C@H]1OC(=O)C[n+]1cc(-c2ccc(Cl)cc2)n2c1CCCCC2.[Cl-]
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. How many bonds in the molecule are rotatable?