Carmustine

Chemical Name: 1,3-bis(2-chloroethyl)-1-nitrosourea (as per EP & USP)

Synonym: Pregnan-​20-​one, 3,​16-​dihydroxy-​, (3α,​5β,​16α)​-; 5β-Pregnan-20-one, 3α,16α-dihydroxy-(8CI); (3α,5β,16α)-3,16-Dihydroxypregnan-20-one; 3α,16α-Dihydroxy-5β-pregnan-20-one; 3α,16α-Dihydroxy-5β-pregnane-20-one; 5β-Pregnane-3α,16α-diol-20-one

Smile: O=C(NCCCl)N(N=O)CCCl