Using COc1ccc(Nc2ncc3nc(Nc4c(F)cc(F)cc4F)n(C4CCCC4)c3n2)cn1 to produce Oc1ccc(Nc2ncc3nc(Nc4c(F)cc(F)cc4F)n(C4CCCC4)c3n2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.