A fungal metabolite with antibacterial activity; active against B. subtilis, B. cereus, B. mycoides, M. smegmatis, and K. pneumoniae (MICs = 0.025, 2, 0.8, 0.2, and 0.003 μg/ml, respectively); active against M. tuberculosis and M. bovis (MICs = 4.5 and 1 μg/ml, respectively)