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