Using O=C(O)CNC(=O)CCc1ccccc1, CNC(c1ccccc1)c1ccccc1 to produce CN(C(=O)CNC(=O)CCc1ccccc1)C(c1ccccc1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.