Using CS(=O)(=O)Cl, O=C1c2ccccc2C(=O)N1CCc1ccc(CCO)cc1 to produce CS(=O)(=O)OCCc1ccc(CCN2C(=O)c3ccccc3C2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.