83481-39-4 Cyclo nmta Cyclo(N-methyl-tyr-arg) Cyclo(N-methyltyrosylarginyl) Cyclo(N-metyr-arg) Guanidine, (3-(5-((4-hydroxyphenyl)methyl)-4-methyl-3,6-dioxo-2-piperazinyl)propyl)-, (2S-cis)-