CN/N=C(/c1nc2ccc([N+](=O)[O-])cc2nc1O)C(O)c1ccc(C(O)/C(=N\NC)c2nc3ccc([N+](=O)[O-])cc3nc2O)cc1
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?