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-[4-[[1-[[4-(2-fluoroethoxy)phenyl]methyl]-3-hydroxypyrrolidin-3-yl]methyl]piperazin-1-yl]ethanone .
user
C20H30FN3O3
assistant