The molecule is an organonitrogen heterocyclic compound that is a 21-membered macrocyclic lactam substituted by a ({1-[(cyclohex-1-en-1-ylcarbonyl)amino]cyclopropyl}carbonyl)oxy group at position 18. It is isolated from Streptomyces sp. TC-1190 and exhibits growth inhibitory effects on a series of human tumour cell lines. It has a role as a metabolite, an antimicrobial agent and an antineoplastic agent. It is an ether, a lactam, a macrocycle, an organonitrogen heterocyclic compound, an organosulfur heterocyclic compound, a member of phenols, a secondary alcohol and a cyclopropanecarboxylate ester.
[(6E,8E,10E,16Z)-15,28-dihydroxy-5-methoxy-14,16-dimethyl-3,24-dioxo-22-thia-2,25-diazatricyclo[18.7.1.021,26]octacosa-1(27),6,8,10,16,20(28),21(26)-heptaen-13-yl] 1-(cyclohexene-1-carbonylamino)cyclopropane-1-carboxylate