Using COC(=O)c1ccc2c(Br)c(N(CC=CCl)C(=O)OC(C)(C)C)ccc2c1 to produce COC(=O)c1ccc2c3c(ccc2c1)N(C(=O)OC(C)(C)C)CC3CCl, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.