Using CC(=O)OCCBr, O=C(NN1CCNCC1)c1cnc(OCC(F)(F)F)c(-c2ccc(Cl)cc2)c1 to produce CC(=O)OCCN1CCN(NC(=O)c2cnc(OCC(F)(F)F)c(-c3ccc(Cl)cc3)c2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.