N=C(N)NS(=O)(=O)c1ccc(NNc2c3ccccc3nc3c(C(=O)Nc4ccc(S(=O)(=O)Nc5ncccn5)cc4)cccc23)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?