You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (4R,6Z,9R,10S)-9,10,18-trihydroxy-16-methoxy-4-methyl-3-oxabicyclo[12.4.0]octadeca-1(14),6,15,17-tetraene-2,8-dione into molecular formula.
user
C19H24O7
assistant