Using O=C1OC(c2ccccc2)(c2ccccc2)C2CNCCN12, O=C(O)c1ccc2ncccc2c1 to produce O=C(c1ccc2ncccc2c1)N1CCN2C(=O)OC(c3ccccc3)(c3ccccc3)C2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.