|Tripartilactam: Confounding ChemDraw since 2012.|
|Dung beetles with brood ball|
Chemistry Note: Did you see that 18-4 trans ring juncture? Normally, that species would be far too strained to exist in anything below an 8-4 system. However, in a ring as large as 18, even with the rigid geometry enforced by the lactam and polyolefin chain, there's still enough wiggle room to accomodate this odd duck.