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 4-[[(1R,3aR,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bR)-3a-[2-[bis(2-methoxyethyl)amino]-2-oxoethyl]-5a,5b,8,8,11a-pentamethyl-1-prop-1-en-2-yl-1,2,3,4,5,6,7,7a,9,10,11,11b,12,13,13a,13b-hexadecahydrocyclopenta[a]chrysen-9-yl]oxy]-2,2-dimethyl-4-oxobutanoic acid .
user
C43H71NO7
assistant