CCN1CCN(Cc2ccc(NC(=O)c3cc(NC(=O)c4ccc5[nH]nnc5c4)cc(OC)c3)cc2C(F)(F)F)CC1
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?