(2S)-3-[(2S,4E)-4-[[(1R,2S,4aR,6S,8R,8aS)-2-[(E)-but-2-en-2-yl]-6,8-dimethyl-1,2,4a,5,6,7,8,8a-octahydronaphthalen-1-yl]-oxidanyl-methylidene]-3,5-bis(oxidanylidene)pyrrolidin-2-yl]-2-methyl-2-oxidanyl-propanoic acid

Q2HBN6 — Diels-Alderase cghA