Using COc1ccc(N(C)S(=O)(=O)c2cccc3c2OC(F)(F)O3)cc1N1CCN(C(=O)OC(C)(C)C)CC1, CCBr to produce CCN(c1ccc(OC)c(N2CCNCC2)c1)S(=O)(=O)c1cccc2c1OC(F)(F)O2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.