Showing structure for 5-[(1e)-2-[(3r,4ar,6s,6as,10as,10br)-6-hydroxy-3,4a,7,7,10a-pentamethyl-octahydro-1h-naphtho[2,1-b]pyran-3-yl]ethenyl]-5-hydroxy-4-methylfuran-2-one