Number of optically active compounds among the products of ozonolysis The number of optically active compound(s) obtained upon complete ozonolysis of
  the following optically active compound is
  
  


In the question, I broke all the double bonds and added a $\ce{-CHO}$ group according to the question (ozonolysis).
Checking for the optically active compounds I found two of them:



But the solution has given only one compound! Can you please help me with this?
Ozonolysis of the given compound gives $\ce{I}$ , $\ce{II}$ , $\ce{III}$ and $\ce{IV}$.


$\ce{I}$ and $\ce{II}$ are Homomers and have same configuration "S" and therefore identical (as shown in the figure).
$\ce{III}$ and $\ce{IV}$ are achiral . Therefore , the total number of optically
active compounds formed after ozonolysis is $\ce{= 1}$.