You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 3-[(1S,3aS,4S,7aS)-1-(1-hydroxyethyl)-7a-methyl-5-oxo-2,3,3a,4,6,7-hexahydro-1H-inden-4-yl]propanoic acid .
user
C15H24O4
assistant