You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl (1S,2R,4S,8S,9S,11S,13R,14S,15R,17R)-8-(furan-3-yl)-1-hydroxy-9,13,18,18-tetramethyl-17-(2-methylbutanoyloxy)-19-methylidene-6,12-dioxo-3,7,16-trioxapentacyclo[12.2.2.14,11.02,13.04,9]nonadecane-15-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C32H40O11
assistant