Nc1ncnc2c1nc(Sc1ccc(Cl)cc1)n2[C@H]1O[C@@H]2CO[P@@](=O)([O-])O[C@H]2[C@@H]1O.[Na+]
Hydrogen bond acceptor: The atom, ion, or molecule component of a hydrogen bond which does not supply the bridging (shared) hydrogen atom. How many hydrogen bond acceptors does the molecule have?