wù bā bǐ tuǒ nà
pentasorbital sodium (a sedative)
戊
wù
fifth of the ten Heavenly Stems 十天干[shi2 tian1 gan1]
巴
bā
the east of Sichuan and Chongqing Municipality
比
bǐ
abbr. for 比利時|比利时[Bi3 li4 shi2]
妥
tuǒ
suitable
钠
nà
sodium (chemistry)