Using CN1CCC(N(C(=O)C(F)(F)F)c2cc(N3CCN(C)CC3)ccc2C(=O)OC(C)(C)C)CC1 to produce CN1CCC(N(C(=O)C(F)(F)F)c2cc(N3CCN(C)CC3)ccc2C(=O)O)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.