143693-57-6 4H-Imidazo(1,5-a)(1,4)benzodiazepine-3-carboxylic acid, 8-fluoro-5-((2-fluoro-18F)ethyl)-5,6-dihydro-6-oxo-, ethyl ester 5-(2'-(18F)Fluoroethyl)flumazenil 5-(2'-Fluoroethyl)flumazenil