Using O=C([O-])[O-], COc1ccc(-c2nc3ncncc3[nH]2)c(OCCSC)c1 to produce COc1ccc(-c2nc3ncncc3[nH]2)c(OCCS(C)=O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.