76705-48-1

(7Z,11Z)-4,10,13,18-tetrahydroxy-1,3,7,11,20a-pentamethyl-20,21-dioxo-1,2,3,4,4a,6a,9,10,12a,13,16,20,20a,20b-tetradecahydro-16a,19-methanobenzo[b]naphtho[2,1-j]oxacyclotetradecine-15-carbaldehyde