[(1~{R},5~{R},6~{S},8~{R})-8-(6-aminopurin-9-yl)-4'-[(~{R})-oxidanyl-[4-(2-oxidanylidenepropylsulfanyl)phenyl]methyl]spiro[2,4,7-trioxa-3-boranuidabicyclo[3.3.0]octane-3,7'-7-boranuidabicyclo[4.3.0]nona-1(6),2,4-triene]-6-yl]methoxy-tris(oxidanyl)phosphanium

B8ZKS5 — Leucine--tRNA ligase