what can be radio code iof my R.Laguna?

battery of the car become a flat becouse of long time parked in garage and after we turned on the car with jump leeds radio is asking for his code, i have tried once but didnt succed, if is any chance to provide me with the code i realy apreciate.
radio model is unknown becouse i dint take it a way from the car, year of make is 2003 since the car is of that year.
for any kind of replay i thank you in advance.