Here's what rhymes with triterpene.

Consider these alternatives

glycosides / rights glucoside / side glucosides / rights sulfonic / chronic trifluoroacetic / magnetic aglycone / known guanidine / seen citrulline / seen isopropanol / whole pyruvic / music perchloric / historic piperazine / seen hyaluronic / chronic salicylic / acetylsalicylic salicin / given pantothenic / academic