Using CCOC(=O)c1c(C)nc2c(O)cc(C)cn12, CC(O)c1c(F)cccc1F to produce CCOC(=O)c1c(C)nc2c(OC(C)c3c(F)cccc3F)cc(C)cn12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.