You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (1S,2S,3S,5R,5'R)-2-methyl-2'-methylidene-5'-prop-1-en-2-ylspiro[6-oxabicyclo[3.1.0]hexane-3,1'-cyclohexane] .
user
C15H22O
assistant