You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-[[(1R,3aR,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bR)-3a-[2-[(2-fluorophenyl)methylamino]-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]-3,3-dimethyl-5-oxopentanoic acid by IUPAC nomenclature, provide its molecular formula.
user
C45H66FNO5
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