Using CCOC(=O)C1=C(Nc2ccc3ncsc3c2)OCC1=O, O=Cc1c[nH]c2ncccc12 to produce CCOC(=O)C1=C(Nc2ccc3ncsc3c2)OC(=Cc2c[nH]c3ncccc23)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.