butenolide Anemonin 192.16810 A butenolide that has formula C10H8O4. C10H8O4 CAS:508-44-1 CHEBI:80791 InChI=1S/C10H8O4/c11-7-1-3-9(13-7)5-6-10(9)4-2-8(12)14-10/h1-4H,5-6H2/t9-,10-/m1/s1 JLUQTCXCAFSSLD-NXEZZACHSA-N KEGG:C16913 O=C1O[C@@]2(CC[C@@]22OC(=O)C=C2)C=C1 Pulsatilla camphor chebi_ontology