6-azanyl-2-[[(2~{R},3~{S},4~{R},5~{R})-5-methoxy-3,4-bis(oxidanyl)oxolan-2-yl]methylamino]-3,7-dihydroimidazo[4,5-g]quinazolin-8-one

P28720 — Queuine tRNA-ribosyltransferase