131256-42-3

2-{(2E)-3-[(1R,3aS,4S,5Z,7R,9aS,10R)-2,3a,4,5,7,9-hexamethyl-3a,4,7,9a-tetrahydro-1H-1,7-methanocyclopenta[8]annulen-10-yl]prop-2-enoyl}-3-hydroxy-5,6,7,7a-tetrahydro-1H-pyrrolizin-1-one