N#Cc1c(N)c2c(c(-c3ccccc3)c1-c1ccccc1)C(=O)N(NC(=S)Nc1ccccc1)C2=O
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?