Using FC(F)CBr, COc1ccc(C(=O)NCc2cccc(C(=O)Nc3ccc4c(c3)CNCC4)c2)cc1OC to produce COc1ccc(C(=O)NCc2cccc(C(=O)Nc3ccc4c(c3)CN(CC(F)F)CC4)c2)cc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.