Using COC(=O)C(OC(C)(C)C)c1c(C(C)C)nc2c(c1-c1ccc(F)cc1)CN(C(=O)C(F)(F)F)CC2(C)C to produce COC(=O)C(OC(C)(C)C)c1c(C(C)C)nc2c(c1-c1ccc(F)cc1)CNCC2(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.