Question

Sum of total chiral centre(s) and total stereo isomers of compound (A) is :

Answer 1

20

Answer 2

The chiral centers in compound (A) are identified as the carbon atoms bonded to four different groups. Based on the structure and substituents in the bicyclo[2.2.1]heptane framework, carbons C1, C3, C4, and C7 are determined to be chiral centers. Thus, there are 4 chiral centers. The total number of stereoisomers for a molecule with n chiral centers is 2^n, unless there is symmetry in the molecule that leads to meso compounds. Due to the unsymmetrical substitution pattern, the molecule does not possess a plane or center of symmetry. Therefore, the number of stereoisomers is 2^4 = 16. The sum of the total chiral centers and total stereoisomers is 4 + 16 = 20.

The final answer is $\boxed{20}$.