Using CC(C)(C)OC(=O)N(CCC(N)=O)C1CCN(C(=O)OCc2ccccc2)CC1 to produce O=C1CCN(C2CCN(C(=O)OCc3ccccc3)CC2)C(=O)N1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.