You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (1R,2S,3S,4R,7S,10S,11R)-3,11-dihydroxy-1-methoxy-10-methyl-4-(2-methylprop-1-enyl)tricyclo[8.3.1.02,7]tetradec-5-ene-6-carbaldehyde ?
user
C21H32O4
assistant