Correct

提制

/ tízhì / 
Strokes

Definition

to refine/to extract

Example

As a Verb

obtain through refining; extract; distil

1
Máhuángsù
麻黄素
shì
是
cóng
从
máhuáng
麻黄
zhōngtízhì
中提制
de
的
  
。

Ephedrine is extracted from ephedra.