Using COc1ccc(-c2cc(-c3ccc4c(c3)CCC4=O)c(-c3ccncc3)o2)cc1 to produce O=C1CCc2cc(-c3cc(-c4ccc(O)cc4)oc3-c3ccncc3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.