Using C=C(c1csc2c1OCCN(C(=O)OC(C)(C)C)C2)C(F)(F)F to produce CC(c1csc2c1OCCN(C(=O)OC(C)(C)C)C2)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.