The molecule is a binaphthopyran resulting from the oxidative coupling at position 8 of two molecules of monapinone E. It is a binaphthopyran and a naphtho-alpha-pyrone. It derives from a monapinone E.
(3S)-8-[(3S)-9,10-dihydroxy-7-methoxy-1-oxo-3-[(2R,4R)-2,4,9-trihydroxynonyl]-3,4-dihydrobenzo[g]isochromen-8-yl]-9,10-dihydroxy-7-methoxy-3-[(2R,4R)-2,4,9-trihydroxynonyl]-3,4-dihydrobenzo[g]isochromen-1-one