Using CCOC(=O)CN1CCN(C(=O)CC(c2ccccc2)c2ccccc2)CC1 to produce O=C(O)CN1CCN(C(=O)CC(c2ccccc2)c2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.