You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[(1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(2-anilinoethylcarbamoyl)-5a,5b,8,8,11a-pentamethyl-1-prop-1-en-2-yl-1,2,3,4,5,6,7,7a,11,11b,12,13,13a,13b-tetradecahydrocyclopenta[a]chrysen-9-yl]benzoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C45H60N2O3
assistant