Translation:I have to be a man, and yet I am a woman.
Every French pupil learns "les conjonctions de coordination": mais, ou, et, donc, or, ni, car. (combining them as : Mais où est donc Ornicar? is the trick to remember them)
Therefore "or" is a 'coordinating' word, linking one piece of sentence to another, with a meaning of opposition or contradiction.
"Mais" (but) introduces a reserve, "ou" (or) an alternative, "et" (and) an addition, "ni" (working in tandem: ni... ni... = neither... nor...) a negation, and "car" (for/because) an explanation.
OK, got it, thank you... I’ve found this: