You are given a code:

def main_solution(x):
    return func_20(func_11(x, 5), func_15('btbhr'))

Can you predict the output of `main_solution("esqwpqkkwy")` 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": "esqwpqkkwy"}, "ref_output": "j\u00abxbv\u00bbb\u00abutv\u00bbp\u00abpbb\u00bbd\u00abh\u00bb\u00abr\u00bb", "ref_code": "def main_solution(x):\n    return func_20(func_11(x, 5), func_15('btbhr'))", "funcname": "main_solution"}
rule