Using CCC1=C[C@H]2[C@@H](C1)C[C@]2(CC(=O)O)CN(C)C(=O)OC(C)(C)C to produce CCC1=C[C@H]2[C@@H](C1)C[C@@]2(CNC)CC(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.