1-(2-chloroethyl)-1-nitroso-3-[(3R,4R,5S,6R)-2,4,5-trihydroxy-6-(hydroxymethyl)oxan-3-yl]urea 1-(2-chloroethyl)-1-nitroso-3-[(3R,4R,5S,6R)-2,4,5-trihydroxy-6-(hydroxymethyl)tetrahydropyran-3-yl]urea 1-(2-chloroethyl)-1-nitroso-3-[(3R,4R,5S,6R)-2,4,5-trihydroxy-6-(hydroxymethyl)-3-tetrahydropyranyl]urea 1-(2-chloroethyl)-1-nitroso-3-[(3R,4R,5S,6R)-2,4,5-trihydroxy-6-methylol-tetrahydropyran-3-yl]urea Chlorzotocin NSC-178248