1 MDS N-[methionyl]-N'-[adenosyl]-diaminosulfone 1.000 2 VAA N-[valinyl]-N'-[adenosyl]-diaminosufone 0.906 3 ILA N-[isoleucinyl]-N'-[adenosyl]-diaminosufone 0.879 4 YDO 5'-deoxy-5'-(ethylsulfamamido)adenosine 0.806