Adaptor for iPod classic with 30 pin available to attach to 8 pin

i have a clock radio with a male 8 pin connector. I want to use my 30 pin iPod classic for the alarm, but I can’t find a way to connect its female 30 pin iPod to the male 8 pin radio.

Is there even an adapter that has a female 30 pin and a female 8 pin?

If I’m not clear, please help me ask a better question. Thx