N#C/C(=C\c1ccc(N2CCCCC2)c([N+](=O)[O-])c1)c1nn(-c2ccccc2)c(N)c1C#N
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?