1 GBX 2-amino-4-[1-(carboxymethyl-carbamoyl)-2-(9-hydroxy-7,8-dioxo-7,8,9,10-tetrahydro-benzo[def]chrysen-10-ylsulfanyl)-ethylcarbamoyl]-butyric acid 1.000 2 GPR (9r,10r)-9-(S-glutathionyl)-10-hydroxy-9,10-dihydrophenanthrene 0.773 3 GPS L-gamma-glutamyl-S-[(9s,10s)-10-hydroxy-9,10-dihydrophenanthren-9-yl]-L-cysteinylglycine 0.773