Diego,

I know nothing of your knowledge/experience level, but please consider carefully whether that animal is best served in your care. My guess, as you couldn't identify it, was that you aren't experienced with large constrictors (not a slam -neither am I). Please research carefully what you've gotten yourself into. Burms get very large. That animal needs a lot of space, the food costs will be high, and you must have careful procedures in place to avoid future accidents. If need be, I'm sure people in this community will help you find an appropriate home for that burm.