Using O=C(OC(Cl)(Cl)Cl)OC(Cl)(Cl)Cl, COc1ccc(Br)c(N(CC(O)CO)C(=O)C(C)(C)C)n1 to produce COc1ccc(Br)c(N(CC2COC(=O)O2)C(=O)C(C)(C)C)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.