Using O=CO, COc1ccc(CN2Cc3c(-c4ccc(C#N)cc4)nc4cccc(n34)C2=O)c(OC)c1 to produce COc1ccc(CN2Cc3c(-c4ccc(C=O)cc4)nc4cccc(n34)C2=O)c(OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.