You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (1aS,2R,4S,4aS,5S,8aR)-5-acetyl-2-hydroxy-4,4a-dimethyl-2,3,4,5,7,8-hexahydro-1aH-naphtho[1,8a-b]oxiren-6-one into its molecular formula.
user
C14H20O4
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