# What is the relation between the following two optical isomers?

I think they should be diastereomers, but the answer to this question is enantiomers, if it is enantiomers then how?

• They are mirror images. Look at the $(S,R)$ configuration of each chiral center. – Mathew Mahindaratne Apr 26 '18 at 6:00
• Rotate one of them by 180-degrees. Compare. – Zhe May 26 '18 at 16:46