Using CCOC(=O)c1sc(NOC(=O)OC(C)(C)C)nc1C(F)(F)F to produce CC(C)(C)OC(=O)ONc1nc(C(F)(F)F)c(C(=O)O)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.