Using COC(=O)c1cnc2c(c1)N(Cc1ccccc1)C(=O)CO2 to produce O=C(O)c1cnc2c(c1)N(Cc1ccccc1)C(=O)CO2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.