Cc1ccc(N2C(=O)/C(=C\NNc3ccc(S(=O)(=O)N4CCOCC4)cc3[N+](=O)[O-])c3ccccc3C2=O)c(C)c1
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?