c1ccc(C(/C(=N/c2ccc(Cc3ccc(/N=C(\C(c4ccccc4)c4ccccc4)N4CC4)cc3)cc2)N2CC2)c2ccccc2)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?