Using ClCCl, CCOC(=O)C1CCCN(CCC=C2c3ccccc3Sc3ccccc32)C1 to produce O=C(O)C1CCCN(CCC=C2c3ccccc3Sc3ccccc32)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.