You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name (3S,6R,8R,10S)-8-[(2E,6E,8Z)-8-[(4R,7R)-7-hydroxy-6-methyl-4-[(2R)-oxiran-2-yl]-3a,4,7,7a-tetrahydro-1-benzofuran-3-ylidene]-4-[(4R,6S)-4-methoxy-6-methyloxan-2-yl]oxy-3-methylocta-2,6-dienyl]-3-methyl-2-propan-2-yl-1,7-dioxaspiro[5.5]undecan-10-ol ?
user
C40H62O9
assistant