You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4R,4aS,6aR,6aS,6bR,8aR,12aR,14aS,14bS)-4,4a,6a,6b,8a,11,11,14a-octamethyl-2,4,5,6,6a,7,8,9,10,12,12a,13,14,14b-tetradecahydro-1H-picen-3-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H50O
assistant