Using NC[C@H]1CN(c2cc(F)c(C3C=CS(=O)(=O)CC3)c(F)c2)C(=O)O1, CCOC(=O)C(F)F to produce O=C(NC[C@H]1CN(c2cc(F)c(C3C=CS(=O)(=O)CC3)c(F)c2)C(=O)O1)C(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.