Using O=C(O)C(c1ccccc1)c1ccccc1, Nc1ccc(CC(N)c2ccccc2)cc1 to produce Nc1ccc(CC(NC(=O)C(c2ccccc2)c2ccccc2)c2ccccc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.