Using O=C(Cc1ccc(Cl)cc1)Nn1nc(-c2ccc(Cl)nc2)c2ccccc2c1=O to produce O=C(Cc1ccc(Cl)cc1)Nn1nc(-c2cccnc2)c2ccccc2c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.