The molecule is a bridged organic heteropentacyclic compund that is 3,4,5,6-tetrahydro-2H,8H-2,6-epoxyoxocino[3,2-b]xanthen-8-one substituted by hydroxy groups at positions 4 and 7, a methoxy group at position 9 and a methyl group at position 2 (the 2S,4R,6S stereoisomer). It is isolated from the marine derived fungus Chaetomium and has antiprotozoal activity. It has a role as a metabolite and an antiprotozoal drug. It is a member of phenols, an organic heteropentacyclic compound, a cyclic ketone, a bridged compound and a cyclic ketal.
(1S,17S,19R)-3,19-dihydroxy-7-methoxy-17-methyl-12,16,21-trioxapentacyclo[15.3.1.02,15.04,13.06,11]henicosa-2(15),3,6(11),7,9,13-hexaen-5-one