Using O=C1C(=O)N(C2CCN(CCc3ccc(F)cc3)CC2)c2cc(Br)ccc21 to produce Fc1ccc(CCN2CCC(Nc3cccc(Br)c3)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.