Using O=C(CN1CCNCC1)c1ccccc1, O=C(CBr)c1ccc2ccccc2c1 to produce O=C(CN1CCN(CC(=O)c2ccc3ccccc3c2)CC1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.