SMILES: CC1=C[C@H]2C3=C(C=CC(=C3)O)O[C@@]4(C1)[C@@]2(C(=O)C=CC4=O)CC=C(C)C
Description: The molecule is an organic heterotetracyclic compound that is 9,9a-dihydro-9,4a-prop[1]enoxanthene-1,4-dione substituted by a hydroxy group at position 7, a methyl group at position 12 and a prenyl group at position 9a. Isolated from the root barks of Ehretia buxifolia, it exhibits antisnake venom activity. It has a role as a metabolite and an antidote. It is an organic heterotetracyclic compound, a cyclic ketone, a cyclic ether and a member of phenols.