Using OC1CCSCC1, CC(C)(C)OC(=O)n1c(=O)[nH]c2ccccc21 to produce CC(C)(C)OC(=O)n1c(=O)n(C2CCSCC2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.