CC(=O)N(C(=O)CC(=O)N1N=C(c2ccccc2)C(/N=N/c2ccccc2[N+](=O)[O-])C1=O)c1ccc(Cl)cc1
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?