CCC(=O)c1ccc(N2CCN(C(=O)c3cc([N+](=O)[O-])ccc3N3CCN(C)CC3)CC2)c(F)c1
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?