You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl N-[2-[(3aR,5aR,5bR,7aR,9S,11aR,11bR,13aS)-9-hydroxy-5a,5b,8,8,11a-pentamethyl-2-oxo-1-propan-2-yl-4,5,6,7,7a,9,10,11,11b,12,13,13a-dodecahydro-3H-cyclopenta[a]chrysen-3a-yl]ethyl]-N-[1-(4-chlorophenyl)cyclopropyl]carbamate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C45H66ClNO4
assistant