2-5A(N6B)
2-5a(n6b)
(N(6)-benzyl-3'-deoxyadenylyl-(2'-5')3'-deoxyadenylyl-(2-2'')-N(9)-((2''-hydroxy-ethoxy)-methyl)adenine)
(n(6)-benzyl-3'-deoxyadenylyl-(2'-5')3'-deoxyadenylyl-(2-2'')-n(9)-((2''-hydroxy-ethoxy)-methyl)adenine)