Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Rugulosuvines are bio-active alkaloids made by Penicillium, that belongs to a class of naturally occurring 2,5-diketopiperazines.
Notes
Kozlovskiĭ AG, Adanin VM, Dahse HM, Grafe U (2001). "". Prikladnaia Biokhimiia I Mikrobiologiia (in Russian). 37 (3): 292–6. PMID11443897.