You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3R,4aS,5R,6R,8aR)-3-bromo-4a,5,6-trimethyl-1,3,4,5,6,7,8,8a-octahydronaphthalen-2-one is the IUPAC name of a molecule. Please give its SMILES representation.
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