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+]
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?