Using CC(C)(C)OC(=O)N[C@H]1CCC[C@H](C(=O)O)C1, CCN(C(C)C)C(C)C to produce CN(C)C(=O)[C@H]1CCC[C@H](NC(=O)OC(C)(C)C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.