You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named (1S,2R,4aS,6aR,6aS,6bR,8aR,10S,12aR,14bS)-1,2,6a,6b,9,9,12a-heptamethyl-10-[2-(octylamino)acetyl]oxy-2,3,4,5,6,6a,7,8,8a,10,11,12,13,14b-tetradecahydro-1H-picene-4a-carboxylic acid is given. What is its corresponding molecular formula?
user
C40H67NO4
assistant