COC(=O)/C(=N/NC(N)=O)C(C(=O)C(=O)Nc1ccc(C)cc1)c1nc2ccc(C(=O)c3ccccc3)cc2nc1O
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?