(2~{S})-4-methyl-~{N}-[(2~{S},3~{R})-3-oxidanyl-4-oxidanylidene-1-[(3~{S})-2-oxidanylidenepyrrolidin-3-yl]-4-[(phenylmethyl)amino]butan-2-yl]-2-[[(~{E})-3-phenylprop-2-enoyl]amino]pentanamide

P0C6X5 — Replicase polyprotein 1ab