Using ClCCCl, O=C(O)c1ccc2c(-c3c(F)cccc3F)c(=O)ccn2c1-c1ccc(F)cc1F to produce COC(=O)c1ccc2c(-c3c(F)cccc3F)c(=O)ccn2c1-c1ccc(F)cc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.