(2S)-N-((S)-5-amino-1-((2-amino-2-oxoethyl)amino)-1-oxopentan-2-yl)-1-((4R,7S,10S,16R)-7-(2-amino-2-oxoethyl)-13-((S)-sec-butyl)-16-(4-ethoxybenzyl)-10-((R)-1-hydroxyethyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosane-4-carbonyl)pyrrolidine-2-carboxamide (CAS 90779-69-4) is a complex compound with a long chemical name. It is a synthetic peptide with a molecular formula that consists of various amino acids and functional groups. This compound has been synthesized for research purposes and may have potential applications in the field of medicine. Further studies are required to fully understand its properties and potential uses.