Using COC(=O)c1cc(C(F)(F)F)cc(NC2CCN(C(=O)OC(C)(C)C)CC2)c1C, CC=O to produce CCN(c1cc(C(F)(F)F)cc(C(=O)OC)c1C)C1CCN(C(=O)OC(C)(C)C)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.