O=C(CC(=O)N(C(=O)/C=C\c1ccccc1)c1ccc(Cl)cc1)N1N=C(c2ccccc2)C(/N=N/c2cccc([N+](=O)[O-])c2)C1=O
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?