Using COC(=O)Nc1ccc(CBr)c(Cl)c1, CC1(C)CONC1=O to produce COC(=O)Nc1ccc(CN2OCC(C)(C)C2=O)c(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.