How long does LSD stay effectual if it's stored contained by, read aloud, a room at the rear a closet?

If I buy it now, and hold on to it till july, will it still have its effects?How long does LSD stay effectual if it's stored contained by, read aloud, a room at the rear a closet?
LSD is greatly sensitive to ultra violet table lamp ( rays given of by the sun) and oxyegen ,but it can be stored in a obscurity moist place and maintain worth for many years...U know its illicit right?
good until the DEA or the cops find out you hold it