Using CC(C)(C)OC(=O)N[C@@H](COCc1ccccc1)C(=O)O, CCOC(=O)CNCc1ccccc1 to produce O=C1CN(Cc2ccccc2)C(=O)[C@H](COCc2ccccc2)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.