O=C1[C@@H]2C(Cc3ccc(O)cc3)NC3(C(=O)Nc4ccc(F)cc43)[C@@H]2C(=O)N1c1ccccc1
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?