Using O=C([O-])[O-], CC(C)(C)OC(=O)N1CCC(NN2CCN(C(=O)OCc3ccccc3)CC2=O)CC1 to produce CN(C1CCN(C(=O)OC(C)(C)C)CC1)N1CCN(C(=O)OCc2ccccc2)CC1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.