Using CC(C)(C)OC(=O)Nc1ccccc1NC(=O)c1ccc(C2CCN(C(=O)OC(C)(C)C)CC2)cc1 to produce Nc1ccccc1NC(=O)c1ccc(C2CCNCC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.