has role has functional parent independent continuant coumarins urolithin A benzochromenone that is 6<em>H</em>-benzo[<i>c</i>]chromen-6-one with at least one hydrogen atom of the benzene rings substituted by an hydroxyl group. CHEBI:234554 phenols benzochromenone bacterial xenobiotic metabolite 6H-dibenzo[b,d]pyran-6-one