Now these two molecules differ by only one carbon atom and two little hydrogen atoms that ride along with it, and yet one of them, heptyl acetate, has the distinct odor of a pear, and hexyl acetate is unmistakably banana.
Ove dvije molekule  se razlikuju u samo jednom atomu ugljika i dva mala atoma vodika  koji su vezana na njega, pa ipak jedan od njih, heptil acetat ima jasan miris kruške, a heksil acetat je nepogrešivo banana.