CC[C@]12C(=O)N(C)C[C@H]([C@@H]3C(=O)N(C)C(=O)[C@@H]31)N2C(=O)c1ccc(Cl)c(Cl)c1
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?