5'-(N(7)-methyl 5'-triphosphoguanosine)-(2'-O-methylguanosine)-(2'-O-methyl-ribonucleotide)(3-) residue
5'-(n(7)-methyl 5'-triphosphoguanosine)-(2'-o-methylguanosine)-(2'-o-methyl-ribonucleotide)(3-) residue