Using CN1C(=O)SC(Cc2cn(-c3ccccc3)nc2OCc2ccccc2)C1=O to produce CN1C(=O)SC(Cc2cn(-c3ccccc3)nc2O)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.