Using C[Mg]Br, COCCOc1cc(C(=O)N(C)OC)cc(C(C)(C)C)c1 to produce COCCOc1cc(C(C)=O)cc(C(C)(C)C)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.