Using CCOC(=O)c1nn(-c2cccc(Sc3cccnc3)c2)c2ncccc2c1=O to produce O=C(O)c1nn(-c2cccc(Sc3cccnc3)c2)c2ncccc2c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.