It appears to be a tren derivative. The best advice--don't bother fucking with it. Tren is a) quite effective b) horrible side effects unless you have some SERMs/AIs. Even with a tren derivative you will get lots of strength/size gains, but your cock will stop working, your prostate will swell (be up pissing mutliple times during the night) libido crash, etc. It will activate prolactin receptors and that can become a nightmare as well.
It is a steroid.
It is probably legal until they ban that derivative, but if you are trying to pass a piss test you will fail.