CCCN(CCC)C(=S)Sc1nc(C)nc(N2CCN(c3nc(C)nc(SC(=S)N(CCC)CCC)c3[N+](=O)[O-])CC2)c1[N+](=O)[O-]
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?