668270-54-0

1H-Purine-2,6-dione,8-(3-amino-1-piperidinyl)-7-(2-butynyl)-1-[2-(2,3-dihydro-3-methyl-2-oxo-1H-benzimidazol-4-yl)-2-oxoethyl]-3,7-dihydro-3-methyl-