Using NC(=O)c1cccc(N)c1N, O=C(O)C1c2ccccc2CCN1C(=O)OCc1ccccc1 to produce NC(=O)c1cccc(NC(=O)C2c3ccccc3CCN2C(=O)OCc2ccccc2)c1N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.