Using O=Cc1c[nH]c2ccc(Cl)cc12, CC(C)(C)OC(=O)CBr to produce CC(C)(C)OC(=O)Cn1cc(C=O)c2cc(Cl)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.