Using CCOC(=O)C1(N)Cc2ccccc2C1, CC(C)(C)OC(=O)N1CCc2cccc(C(=O)O)c2C1 to produce CCOC(=O)C1(NC(=O)c2cccc3c2CN(C(=O)OC(C)(C)C)CC3)Cc2ccccc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.