20149-38-6 | (4R,10E,12R)-12-Acetoxy-4,8,9,12-tetrahydro-3,11-dimethyl-4,7-metheno-6H-furo[3,2-c]oxacycloundecin-6-one | C17H18 O5 |
20149-41-1 | (1aS,4R,5Z,10S,10aS)-4-Acetoxy-3,4,10,10a-tetrahydro-5,9-dimethyl-2H-10,1a-(epoxymethano)oxireno[4,5]cyclodeca[1,2-b]furan-12-one | C17H18 O6 |