The molecule is a 17-membered macrocyclic lactam that incorporates a phenol and a substituted indole moiety. A stereoisomer of TMC-95A, it has a [(3R)-3-methyl-2-oxopentanoyl]amino group at position 18. It acts as a proteasome inhibitor and is isolated from Apiospora montagnei Sacc. TC 1093, isolated from a soil sample. It has a role as an antimicrobial agent, an antineoplastic agent, a proteasome inhibitor and a fungal metabolite. It is a member of indoles, a lactam, a macrocycle, a member of phenols, a secondary alcohol and a tertiary alcohol.
(10S,11R,12S,15S,18S)-15-(2-amino-2-oxoethyl)-10,11,23-trihydroxy-18-[[(3R)-3-methyl-2-oxopentanoyl]amino]-9,14,17-trioxo-N-[(Z)-prop-1-enyl]-8,13,16-triazatetracyclo[18.3.1.02,7.06,10]tetracosa-1(23),2(7),3,5,20(24),21-hexaene-12-carboxamide