Como dizer "Eu não lembro de ter feito isso" em inglês

Eu diria:

I don't remember doing that. [Eu não me lembro de ter feito isso.]

Regards.

"To remember", unlike "Se lembrar", is not a reflexive verb in English, so you don't need the pronoun. However, the pronoun could show up as part of an object if you needed to say something like this:

I remember* you doing that, but I don't remember me doing that **.

These phrases act as objects of the verb "remember" (I remember what?)

*Reminding ourselves of the verbs in question:

To remember = se lembrar
To remind = lembrar

**Ok, for the grammar fanatics:

I remember your doing that, but don't remember my doing that.

Henry:

I like the grammar fanatics part..lol

So do I,
Thanks for answering...

Complementando:

1. Lembrar-se de fazer algo: Remember to do something

Ex.: I didn't remember to call her and she called me names. / Eu não me lembrei de ligar para ela e ela me xingou.

2. Lembrar-se de ter feito algo no passado: Remember doing something

Ex.: I don't remember seeing him before. / Eu não me lembro de ter visto ele antes.

Bons estudos!

And for the grammar fanatics ..
how about using a present perfect form(to have plus past participle)
I can't remember having done that.
I cant remember having said that.
Tim
(P.S.I hate grammar. For me it's a straitjacket)