The molecule is a meroterpenoid produced by Aspergillus nidulans. It has a pentacyclic structure which incorporates three lactone functionalities and a spiro union.
(1S,2R,5S,8R,9R,12S,13S)-8,12-dihydroxy-2,6,6',6',9,13-hexamethyl-16-methylidenespiro[10,14-dioxatetracyclo[7.6.1.01,12.02,7]hexadec-6-ene-5,5'-pyran]-2',11,15-trione