Using COc1cc(-n2nnn(CCOS(C)(=O)=O)c2=O)c(Cl)cc1Cl to produce C=Cn1nnn(-c2cc(OC)c(Cl)cc2Cl)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.