Using O=C(O)c1cn(-c2ccc(Cl)cc2)c(-c2ccccc2Cl)n1, Oc1c(F)c(F)c(F)c(F)c1F to produce O=C(Oc1c(F)c(F)c(F)c(F)c1F)c1cn(-c2ccc(Cl)cc2)c(-c2ccccc2Cl)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.