Using Fc1cc2c(cc1Br)NCC2, COc1ccc2c(Cl)ncnc2c1 to produce COc1ccc2c(N3CCc4cc(F)c(Br)cc43)ncnc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.