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