CC1=NN(C(=O)CC(=O)Nc2ccccc2C)C(=O)C1/N=N\c1ccc(S(=O)(=O)c2ccc(/N=N/C3C(=O)N(C(=O)CC(=O)Nc4ccccc4C)N=C3C)cc2)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?