CC1(C)CC(=O)c2c(nc(SCC(=O)Nc3nsc(-c4ccccc4)n3)c(C#N)c2-c2ccccc2)C1
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?