Using CCOC(=O)c1cnn(Cc2cnc(OC)c(-c3cccc(Cl)c3)c2)c1 to produce COc1ncc(Cn2cc(C(=O)O)cn2)cc1-c1cccc(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.