You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1R,2R,11S,12R,13R,15S)-12-methoxy-17,17-dimethyl-15-(3-methylbut-2-enyl)-3,16-dioxapentacyclo[11.4.1.02,11.02,15.04,9]octadeca-4,6,8-triene-10,14-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C24H28O5
assistant