<unk>  is a cardiac glycoside, a kind of drug that can be used in the treatment of congestive heart failure and cardiac arrhythmia (irregular heartbeat). It is of the bufanolide type and can be obtained from plants of the genus Scilla, notably Scilla maritima.
Proscillaridin
Ochratoxin A
Chlorotoxin
Desaspidin
Candicidin
Heteropodatoxin
Enterotoxin
Pneumolysin