This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Usnic acid .svg validSVG Structure of diacetyl dihydroxy bdimethyldibenzob dfuran bH dione Own Emeldir talk bH Dibenzofurandione diacetyl dihydroxy bdimethyl CI Diacety dihydroxy bdimethyl bHdibenzofuranedione Diacetyl dihydroxy bdimethylbHdibenzofuran dione Hydroxy usnate Barba de capuchino Carbonusinic acid Usinic acid Usnea