Using CC(C)(C)OC(=O)N1CCN(C2CCN(Cc3ccccc3)CC2)C(=O)C1 to produce CC(C)(C)OC(=O)N1CCN(C2CCNCC2)C(=O)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.