Using COc1cccc(C=O)c1O, Cc1nc2ccccc2c(=O)n1-c1ccc(Cl)c(Cl)c1 to produce COc1cccc(C=Cc2nc3ccccc3c(=O)n2-c2ccc(Cl)c(Cl)c2)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.