Using COC(=O)C(CNCCNC(=O)OC(C)(C)C)N1C(=O)c2ccccc2C1=O, CCOC(=O)Cl to produce CCOC(=O)N(CCNC(=O)OC(C)(C)C)CC(C(=O)OC)N1C(=O)c2ccccc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.