Using CCO, O=C(O)CN1C(=O)C(=Cc2csc(Nc3ccccc3)n2)SC1=S to produce CCOC(=O)CN1C(=O)C(=Cc2csc(Nc3ccccc3)n2)SC1=S, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.