Using COCC(CO)Nc1nc(SCc2cccc(F)c2F)nc2nc(N)sc12, Cl to produce COCC(CO)Nc1nc(SCc2cccc(F)c2F)nc2nc(Cl)sc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.