C[C@]12[C@@H]3CC[C@H]1[C@@H](OC(=O)Nc1cc([N+](=O)[O-])cc([N+](=O)[O-])c1)C(=O)N2CC3
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?