Lysergic acid 2-pentylamide
Lysergic acid 2-pentylamide (2-LSP), also known as N-(2-pentyl)lysergamide (N2Pe-LA), is a serotonin receptor modulator and possible psychedelic drug of the lysergamide family related to lysergic acid diethylamide (LSD). It is a mixture of (R)- and (S)- enantiomers.
Source: Wikipedia — Lysergic acid 2-pentylamide (CC BY-SA 4.0)