Using CCOC(=O)NC1CCc2ccc(CCBr)cc2C1Cc1cccc(Cl)c1, CCCS to produce CCCSCCc1ccc2c(c1)C(Cc1cccc(Cl)c1)C(NC(=O)OCC)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.