Using CCOC(=O)[C@](C)(O)C(=O)N(C)N, CC(=O)N[C@@H](C)C(=O)N[C@@H](C)C(=O)N1CCC[C@H]1C(=O)O to produce CCOC(=O)[C@](C)(O)C(=O)N(C)NC(=O)[C@@H]1CCCN1C(=O)[C@H](C)NC(=O)[C@H](C)NC(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.