Using CC(C)(C)OC(=O)NCc1nnc2ccc(C=O)nn12, C[Mg]Br to produce CC(O)c1ccc2nnc(CNC(=O)OC(C)(C)C)n2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.