3,8-DIAZABICYCLO(3.2.1)OCTANE, 3-(CYCLOPENTYLMETHYL)-8-PROPIONYL- 3-(Cyclopentylmethyl)-8-propionyl-3,8-diazabicyclo(3.2.1)octane 5-23-03-00467 (Beilstein Handbook Reference) 63977-97-9 BRN 0523813