Using OCCn1c2ccccc2c2ccncc21, COC(=O)C(Cc1ccc(O)cc1)C(=O)OC to produce COC(=O)C(Cc1ccc(OCCn2c3ccccc3c3ccncc32)cc1)C(=O)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.