Using CCOC(C)=O, CC(=O)CC(C)(C)NC(=O)OC(C)(C)C to produce CCOC(=O)/C=C(\C)CC(C)(C)NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.