Using CN(CCCCN1C(=O)c2ccccc2C1=O)CCN(C)C(c1ccccc1)c1ccccc1 to produce CN(CCCCN)CCN(C)C(c1ccccc1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.