Using NC(=O)CC[C@@H](NC(=O)OCc1ccccc1)C(=O)OCc1ccccc1, NCc1ccccc1 to produce O=C(CC[C@@H](NC(=O)OCc1ccccc1)C(=O)OCc1ccccc1)NCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.