Using CN1CCC(CN2CCNCC2)CC1, O=C(O)CC(c1ccccc1)c1ccccc1 to produce CN1CCC(CN2CCN(C(=O)CC(c3ccccc3)c3ccccc3)CC2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.