Using CN1CCN(c2cc(C(F)(F)F)ccc2-c2cccc3c2CCN(C(=O)OC(C)(C)C)C3)CC1 to produce CN1CCN(c2cc(C(F)(F)F)ccc2-c2cccc3c2CCNC3)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.