I think you shouldn't have

[Verona_82]

Hello,

I'm not sure if (1) is acceptable:

(1) I think you shouldn't have done that.
(2) I don't think you should have done that.

Does (1) sound fine to a native speaker's ears?

Thank you.

 

[5jj]

(1) I think you shouldn't have done that.
(2) I don't think you should have done that.

#1 is not incorrect, but #2 is what we normally say.