Using CC(C)(C)[O-], CC(C)(C)OC(=O)N1CC(=O)C[C@H]1C(=O)O to produce C=C1C[C@@H](C(=O)O)N(C(=O)OC(C)(C)C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.