You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(3S,8S,9S,10R,13S,14S)-13-(3-hydroxy-2-methylpropyl)-10-methyl-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl] (Z)-octadec-9-enoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C40H68O3
assistant