Using CC(=O)N1CCN(Cc2ccc(OC3CN(C(=O)OC(C)(C)C)C3)cc2)CC1 to produce CC(=O)N1CCN(Cc2ccc(OC3CNC3)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.