Steam key for C&C ultimate collection

Hi,

I have all my games on Steam, and i bought also C&C ultimate collection and thought i would get a steam key, but i got Origin key, could someone please help me and give me steam key so i can added to my steam library?

Is this possible? Some other developers give steam keys, if i can proof that i have the game.

Is this also possible with EA?

Thank you in advance,

Fernando Ramsey