Carmustine

Carmustine (bis-chloroethylnitrosourea, BCNU, BiCNU) is a medication used mainly for chemotherapy. It is a nitrogen mustard β-chloro-nitrosourea compound used as an alkylating agent. [Source: Wikipedia ]

Synonyms
BCNU
Bis-chloroethylnitrosourea
May Cause
Bilateral basilar lung disease
Interstitial lung fibrosis