You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule methyl (3R,4S,5S,6S)-6-benzhydryl-5-[(2-methoxy-5-methylsulfanylphenyl)methylamino]-1-azabicyclo[2.2.2]octane-3-carboxylate ?
user
C31H36N2O3S
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