Using O=C(O)c1nc2ccccc2n(Cc2ccccc2)c1=O, CCCCCCNCCCCCC to produce CCCCCCN(CCCCCC)C(=O)c1nc2ccccc2n(Cc2ccccc2)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.