Using CCOC(=O)CBr, O=C(NC1CCNCC1)c1ccccc1-c1ccc(C(F)(F)F)cc1 to produce CCOC(=O)CN1CCC(NC(=O)c2ccccc2-c2ccc(C(F)(F)F)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.