Nc1c(/N=N/c2ccc(S(=O)(=O)CCOS(=O)(=O)[O-])cc2)c(S(=O)(=O)[O-])cc2cc(S(=O)(=O)[O-])c(/N=N/c3ccc(S(=O)(=O)CCOS(=O)(=O)[O-])cc3)c(O)c12.[Na+].[Na+].[Na+].[Na+]
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?