You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S,3R)-2-methyl-3-(5-pent-4-enylfuran-2-yl)-2-prop-2-enylcyclopentan-1-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H24O2
assistant