121055-54-7 4H-Imidazo(2,1-b)purin-4-one, 1-(2-deoxy-5-O-(hydroxy((hydroxy(phosphonooxy)phosphinyl)oxy)phosphinyl)-beta-D-erythro-pentofuranosyl)-1,5-dihydro- Edguo-ppp Epsilon-dgtp N(2),3-Etheneodeoxyguanosine-5'-triphosphate N(2),3-Ethenodeoxyguanosine 5'-triphosphate