COc1ccc(OC)c(C2C(C(=O)Nc3ccc(C)cc3C)=C(C)Nc3c(C(=O)Nc4ccc(F)cc4)cnn32)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?