Chemistry - STEREO ISOMERISM Question with Solution | TestHub

A stereocentre is an sp³ carbon atom attached to four different groups.

In the given structure, the five-membered ring contains 3 stereocentres because these carbons have four different substituents.

The two sp³ carbons attached to the oxygen-containing ring also have four different groups, giving 2 more stereocentres.

In the side chain, 2 sp³ carbons are stereocentres due to different groups attached to them.

One additional sp³ carbon in the oxygen-containing portion is also a stereocentre.

Therefore, total stereocentres: $3+2+2+1=8$