You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as [(4aS,4bR,6aS,8S,10aS,10bS,12aS)-2-hydroxy-10a,12a-dimethyl-1,3-dioxo-4a,4b,5,6,6a,7,8,9,10,10b,11,12-dodecahydro-4H-naphtho[2,1-f]isoquinolin-8-yl] acetate using the IUPAC nomenclature.
user
C21H31NO5
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