Using CCOC(=O)CNc1cccc2c1N(Cc1ccc3ccccc3c1)C(=O)CO2 to produce O=C(O)CNc1cccc2c1N(Cc1ccc3ccccc3c1)C(=O)CO2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.