O=C(Nc1ccc(C(=O)N2CCC(N3CCOCC3)CC2)cc1)c1ccc(Br)o1.O=C(O)C(F)(F)F
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?