Cc1nc(N)c2ncn([C@@H]3O[C@H](CS)[C@@H](OP(=O)([O-])OP(=O)([O-])OP(=O)([O-])[O-])[C@H]3O)c2n1.[Na+].[Na+].[Na+].[Na+]
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. Amide C-N bonds are not counted because of their high barrier to rotation.  How many rotatable bonds does the molecule have?