The molecule is a 17-membered macrocyclic lactam that incorporates a phenol and a substituted indole moiety. It includes a R-hydroxy group at position 11 and a (3-methyl-2-oxopentanoyl)amino group at position at position 18 with a S-methyl group. It acts as a proteasome inhibitor and is obtained from Apiospora montagnei Sacc. TC 1093, isolated from a soil sample. It has a role as an antimicrobial agent, a proteasome inhibitor, an antineoplastic agent, a bacterial metabolite and a fungal metabolite. It is a macrocycle, a lactam, a secondary alcohol, a tertiary alcohol, a member of indoles and a member of phenols.
(10S,11R,12S,15S,18S)-15-(2-amino-2-oxoethyl)-10,11,23-trihydroxy-18-[[(3S)-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