You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule (1R,5S)-1-[(E)-[(1R,3aR,7aR)-1-[(2R,5R)-5-hydroxy-6-methylheptan-2-yl]-7a-methyl-2,3,3a,5,6,7-hexahydro-1H-inden-4-ylidene]methyl]-1,4,5,6,7,8-hexahydro-2,3-benzodioxin-5-ol ?
user
C27H44O4
assistant