N#Cc1c(C#N)c(SSc2c(C#N)c(C#N)c(N)n2-c2cccc3ccccc23)n(-c2cccc3ccccc23)c1N
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?