Lysergic acid methylamide
Lysergic acid methylamide (LAM), also known as N-methyllysergamide (NM-LA), is a serotonin receptor modulator of the lysergamide family related to the psychedelic drug lysergic acid diethylamide (LSD). It is the N-methyl derivative of ergine (lysergic acid amide; LSA) and the analogue of LSD in which the N,N-diethyl groups have been replaced with one N-methyl group.
Source: Wikipedia — Lysergic acid methylamide (CC BY-SA 4.0)