Using CC(C)(C)OC(=O)N1C[C@H](O)C[C@H]1C(=O)O, CI to produce CO[C@@H]1C[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.