Circle the correct nomenclature of the Diazepam( 地西泮 )
A.
7-chloro-1-methyl-5-phenyl-1,3-dihydro-2H-1,4-benzodiazepine-2-one
B.
7-chloro-1-ethyl-5-phenyl-1,3-dihydro-2H-1,4-benzodiazepine-2-one
C.
7-fluoro-1-ethyl-5-phenyl-1,3-dihydro-2H-1,4-benzodiazepine-2-one
D.
7-fluoro-1-methyl-5-phenyl-1,3-dihydro-2H-1,4-benzodiazepine-2-one