1. Pyr1 can be described as a tetracyclic molecule with a simple structure. 2. Cucurbitacin E is a highly oxidated steroid consisting of a tetracyclic triterpene. 3. The tetracyclic 17-carbon ( heptadecane ) skeleton. 4. It focuses on building the tetracyclic unit before introducing the second indole unit. 5. The synthesis of the tetracyclic meroterpenoid ( + )-liphagal involved an aryne intermediate. 6. The paclitaxel molecule consists of a tetracyclic core called baccatin III and an amide tail. 7. Beagles ) tetracyclic dopamine reuptake inhibitor ( of somewhat spurious classification in the former ). 8. Tetracyclic antidepressants ( TeCAs ) are a class of antidepressants that were first introduced in the 1970s.9. Originally, the manufacturer claimed that maprotiline is better tolerated than other tri-/ tetracyclic drugs. 10. Loxapine may be metabolized by " N "-demethylation to amoxapine, a tetracyclic antidepressant.