You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule [1,2,2,3,3-pentamethyl-1-(1-methylcyclopropyl)-3a-[2-(5-phenyl-1H-imidazol-2-yl)propan-2-ylcarbamoyl]-5,5a,5b,6,7,7a,8,9,10,11,11a,11b,12,13,13a,13b-hexadecahydro-4H-cyclopenta[a]chrysen-9-yl] acetate .
user
C45H65N3O3
assistant