S-(2-(N(7)-guanyl)ethyl)glutathione

S-[2-(Guanine-7-yl)ethyl]glutathione

L-γGlu-S-[2-(Guanin-7-yl)ethyl]-L-Cys-Gly-OH ester

γGlu-S-[2-[(6,7-Dihydro-2-amino-6-oxo-1H-purine)-7-yl]ethyl]-L-Cys-Gly-OH