Using CCOC(=O)C1Cc2nnc(-c3cccc(C(F)(F)F)c3)cc2C(O)C1 to produce O=C(O)C1Cc2nnc(-c3cccc(C(F)(F)F)c3)cc2C(O)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.