The molecule is an ansamycin consisting of a 19-membered macrocyle incorporating a benzoquinone ring and a lactam functionality. It shows antimicrobial activity against many Gram-positive and some Gram-negative bacteria. It has a role as an antiviral agent, an antineoplastic agent, an antimicrobial agent, a cysteine protease inhibitor and a Hsp90 inhibitor. It is an ansamycin, a carbamate ester, an organic heterobicyclic compound and a member of 1,4-benzoquinones.
[(4E,6Z,8S,9S,10E,12S,13R,14S,16R)-13-hydroxy-8,14,19-trimethoxy-4,10,12,16-tetramethyl-3,20,22-trioxo-2-azabicyclo[16.3.1]docosa-1(21),4,6,10,18-pentaen-9-yl] carbamate