Using CC(=O)OCC(=O)Cl, COCCNC(N)=Nc1nc(-c2cccc(CN)c2)cs1 to produce COCCNC(N)=Nc1nc(-c2cccc(CNC(=O)CO)c2)cs1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.