3-Aza-A-homoandrost-4a-en-4-one, {17-[[[4-[bis(2-chloroethyl)} amino\]phenoxy\]acetyl\]oxy\]-, (17-.beta.)- 5a,7a-Dimethyl-2-oxo-2,3,4,5,5a,5b,6,7,7a,8,9,10,10a,10b,11,12-hexadecahydrocyclopenta[5,6]naphtho[1,2-d]azepin-8-yl (4-(bis(2-chloroethyl)amino)phenoxy)acetate AIDS-131072 AIDS131072 NSC620480