Using CC(=O)Nc1cccc(OCC(=O)O)c1, NCC(O)CN1CCc2ccccc2C1 to produce CC(=O)Nc1cccc(OCC(=O)NCC(O)CN2CCc3ccccc3C2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.