99674-27-8 Carbamic acid, (8-((4,6-dideoxy-2-O-(2,4-dideoxy-3-O-methyl-4-((1-methylethyl)amino)-alpha-L-threo-pentopyranosyl)-4-(((2,6-dideoxy-4-S-methyl-4-thio-beta-D-ribo-hexopyranosyl)oxy)amino)-beta-D-glucopyranosyl)oxy)-12-((2,6-dideoxy-4-O-(4,5-dimethoxy-2-((2-methoxy-1-oxo-2-propenyl)amino)benzoyl)-alpha-L-ylxo-hexopyranosyl)oxy)-1-hydroxy-13-(2-(methyltrithio)ethylidene)-11-oxobicyclo(7.3.1)trideca-4,9-diene-2,6-diyn-10-yl)-, methyl ester, (1R-(1R*,4Z,8S*,12S*,13E))- Esperamicin A2