Using COC(=O)c1nc(N2CCCCS2(=O)=O)c2cccnc2c1O to produce O=C(O)c1nc(N2CCCCS2(=O)=O)c2cccnc2c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.