Using O=C([O-])[O-], CCNCC(C)N1c2ccccc2Sc2ccc(C#N)cc21 to produce CCN(C)CC(C)N1c2ccccc2Sc2ccc(C#N)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.