You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (1R)-1-(2-ethylphenyl)-1-[(3R)-3-[4-(5,6,7,8-tetrahydro-1,8-naphthyridin-2-yl)butoxy]pyrrolidin-1-yl]propan-2-one .
user
C27H37N3O2
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