Using COc1cc(Cl)c(C)c(Br)c1N(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C to produce COc1cc(Cl)c(C)c(Br)c1NC(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.