Using Nc1ccc2c(c1)OCO2, COC(=O)c1ccc(OCCCCl)cc1 to produce COC(=O)c1ccc(OCCCNc2ccc3c(c2)OCO3)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.