WIN-2299 is an

anticholinergic Anticholinergics (anticholinergic agents) are substances that block the action of the neurotransmitter called acetylcholine (ACh) at synapses in the central and peripheral nervous system. These agents inhibit the parasympathetic nervous sys ...

drug. Human reactions to WIN-2299 include sedation (2 mg),

LSD Lysergic acid diethylamide (LSD), also known colloquially as acid, is a potent psychedelic drug. Effects typically include intensified thoughts, emotions, and sensory perception. At sufficiently high dosages LSD manifests primarily mental, vi ...

-like reactions (6 mg), and an acute delirious episode (10 mg).

References

Muscarinic antagonists Thiophenes Diethylamino compounds Cyclopentyl compounds {{hallucinogen-stub