Using O=C1CC(=O)C2(CCN(Cc3ccccc3)CC2)N1c1cccc(F)c1, NCCCBr to produce O=C1C2=C(NCCC2)C2(CCN(Cc3ccccc3)CC2)N1c1cccc(F)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.