Using CC(=O)O, CCOC(=O)/C=C/c1n[nH]c2cc(C#N)ccc12 to produce CCOC(=O)/C=C/c1n[nH]c2cc(C=O)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.