You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[(1S,2R,4aR,6aR,6bR,8aR,12aR,14aR,14bS)-11-cyano-1,2,6a,6b,9,9,12a-heptamethyl-10,14-dioxo-2,3,4,5,6,6a,7,8,8a,13,14a,14b-dodecahydro-1H-picen-4a-yl]-N-methylpropanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C34H50N2O3
assistant