Using CCOC(=O)c1ccc2cc(C(=O)OCC)[nH]c2c1, CC(C)(C)OC(=O)NCC1(CO)CCC1 to produce CCOC(=O)c1ccc2cc(C(=O)OCC)n(CC3(CNC(=O)OC(C)(C)C)CCC3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.