Using COC(=O)c1cc(Br)c(Cl)c(N(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)c1 to produce COC(=O)c1cc(Br)c(Cl)c(NC(=O)OC(C)(C)C)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.