Using O=C1Nc2ccc(C(=O)O)cc2C1=Cc1ccnc2ccccc12, CO to produce COC(=O)c1ccc2c(c1)C(=Cc1ccnc3ccccc13)C(=O)N2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.