Cn1c(-[n+]2c(-c3ccccc3)cc(-c3ccccc3)cc2-c2ccccc2)nc2cc([N+](=O)[O-])ccc21.[I-]
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?