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 1-[6-benzyl-5-[(3R)-2-ethynyl-3-hydroxy-1-azabicyclo[2.2.2]octan-3-yl]pyridin-2-yl]pyrrolidin-2-one .
user
C25H27N3O2
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