(2aS,2a1R,5aS,7S,7aR,8S,10bS)-8-(methoxymethoxy)-2a,4,4,7,10-pentamethyl-2a1,7-bis((trimethylsilyl)oxy)-2a1,6,7,7a,8,10b-hexahydro-1,3,5-trioxabenzo[cd]cyclopenta[h]azulene-2,9(2aH,5aH)-dione

(2aS,2a1R,5aS,7S,7aR,8S,9R,10bS)-9-hydroxy-8-(methoxymethoxy)-2a,4,4,7,10-pentamethyl-2a1,7-bis((trimethylsilyl)oxy)-2a1,5a,6,7,7a,8,9,10b-octahydro-1,3,5-trioxabenzo[cd]cyclopenta[h]azulen-2(2aH)-one