You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[[(3S,6aR,6bS,8aS,14bR)-8a-[[6-[[(1S)-1-carboxyethyl]amino]-6-oxohexyl]carbamoyl]-4,4,6a,6b,11,11,14b-heptamethyl-1,2,3,4a,5,6,7,8,9,10,12,12a,14,14a-tetradecahydropicen-3-yl]oxy]-4-oxobutanoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C43H68N2O8
assistant