Using C[Mg]Br, O=C(Nc1cnn(Cc2coc(C(O)O)n2)n1)OCc1ccccc1Cl to produce CC(O)c1nc(Cn2ncc(NC(=O)OCc3ccccc3Cl)n2)co1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.