https://www.thevespiary.org/rhodium/Rhodium/chemistry/246labrat.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/246labrat.html)
for ideas for your synthesis.I would bet that the C5 chain makes it an antagonist at the 5-HT2A receptor and thereby inactive as a psychedelic.
thus making it a useful antipsychotic....
Antoncho