IUPAC: (2R,3R,7S,7aR)-3-hydroxy-2,7-bis[(1E)-prop-1-en-1-yl]-2H,3H,5H,7H,7aH-furo[3,4-b]pyran-5-one

SMILES: [H][C@@]12O[C@H](\C=C\C)[C@H](O)C=C1C(=O)O[C@H]2\C=C\C |c:9|