(Solved): Using acetylene as your only source of carbon atoms, design a synthesis of pentanal, shown below (N ...

Using acetylene as your only source of carbon atoms, design a synthesis of pentanal, shown below (Note: pentanal has an odd number of carbon atoms, while acetylene has an even number of carbon atoms): The transformation above can be performed with some reagent or combination of the reagents listed below. Give the necessary reagent(s) in the correct order, as a string of letters (without spaces or punctuation, such as "EBF"). If there is more than one correct solution, provide just one answer.