乙胺丁醇 [－－－－]

Jyutping jyut3 on1 ding1 seon4
Pinyin yǐ ān dīng chún

乙胺丁醇 [－－－－]

Jyutping jyut3 on1 ding1 seon4
Pinyin yǐ àn dīng chún