You are given a code:

def main_solution(x):
    return func_17(('mtjnou' + 'thjdm'))

Can you predict the output of `main_solution("gcprlqjxh")` without writing any code? Please reason and put your final answer in the following json format: {"output": <your output>}, where <your output> should be the final string.
user
{"ref_input": {"x": "gcprlqjxh"}, "ref_output": "mdjhtuonjtm", "ref_code": "def main_solution(x):\n    return func_17(('mtjnou' + 'thjdm'))", "funcname": "main_solution"}
rule