Exchange with chloroform? I was under the impression that you wouldn’t see exchange because the deuterium in CDCl3 isn’t really exchangeable. Or do you mean like with a D2O shake.
The OH is phenolic though so it has the potential to be a little more down field than a normal OH. That is kind of why I thought those signals at 6.16 ppm were the hydroxyls. But then there isn’t really an explanation where the aromatic protons would be.