Using CC(C)(C)OC(=O)N1CCC(c2nc(C=O)cs2)CC1, Cl[Mg]CCc1ccccc1 to produce CC(C)(C)OC(=O)N1CCC(c2nc(C(O)CCc3ccccc3)cs2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.