COc1ccc2c(c1)c1c(c(=O)n(-c3ccc(F)c(Cl)c3)c(=O)n1Cc1ccccc1C)n2C
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?