The molecule is the disulfide resulting from oxidative coupling of the thiol groups of two molecules of mycothiol. It derives from a mycothiol.
(2R)-2-acetamido-3-[[(2R)-2-acetamido-3-[[(2R,3R,4R,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-2-[(2R,3R,5S,6R)-2,3,4,5,6-pentahydroxycyclohexyl]oxyoxan-3-yl]amino]-3-oxopropyl]disulfanyl]-N-[(2R,3R,4R,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-2-[(2R,3R,5S,6R)-2,3,4,5,6-pentahydroxycyclohexyl]oxyoxan-3-yl]propanamide