Using C[Mg+], COc1cn(-c2cc(F)c(Br)cc2F)nc(C(=O)N(C)OC)c1=O to produce COc1cn(-c2cc(F)c(Br)cc2F)nc(C(C)=O)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.