You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(3S,8R,9S,10R,13S,14S,16E)-10,13-dimethyl-16-[(2-methylpyrazol-3-yl)methylidene]-17-oxo-2,3,4,7,8,9,11,12,14,15-decahydro-1H-cyclopenta[a]phenanthren-3-yl] acetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H34N2O3
assistant