CSc1nc(N)c2ncn([C@@H]3O[C@H](COP(=O)([O-])OP(=O)([O-])[O-])[C@H](O)[C@H]3O)c2n1.[Na+].[Na+].[Na+]
A lower number of negative pKa indicates that the acid dissociates more entirely in water. What is the negative pKa of this molecule?