You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 1-[1-(3-chlorophenyl)ethyl]-3-ethyl-2-[2-(4-fluorophenyl)-2-hydroxyethyl]guanidine using the IUPAC nomenclature.
user
C19H23ClFN3O
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