sesquiterpene terpenoid fundamental parent humulane 1,1,4,8-tetramethylcycloundecane 210.39870 A terpenoid fundamental parent that has formula C15H30. Beilstein:1902327 C15H30 CC1CCCC(C)CCC(C)(C)CCC1 CHEBI:36523 InChI=1S/C15H30/c1-13-7-5-8-14(2)10-12-15(3,4)11-6-9-13/h13-14H,5-12H2,1-4H3 UTJJFHJHTZKQSW-UHFFFAOYSA-N chebi_ontology humulane