Using CSS(C)(=O)=O, CCNC(=O)c1c([Si](C)(C)C)sc2ccccc12 to produce CCN(SC)C(=O)c1c([Si](C)(C)C)sc2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.