You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N,N-diethyl-2-[[1-(3-fluoro-4-methoxyphenyl)-6-methoxy-1,2,3,4-tetrahydroisoquinolin-7-yl]oxy]ethanamine into molecular formula.
user
C23H31FN2O3
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