```python
from cryptography.fernet import Fernet

key = "CT0cgUTU7gBBvA3DOk4H30JMQSFwNm-viqZm9eDwPK8="

ciphertext = "gAAAAABk6hyIDTPn6qoZLDTvrNImBSmLqDZHjgsVwuTwiDVSGPa5-RZlt7sABr-kvQaTlg5mUwKskO6MznG2ZQICBryCoBT1vFbkEXcGBg7mSGROIuy3A4-g71PcEmnJpEIyHkT269M1gLmATylgsfvlHJlL9SgAksnZC1PMPR4K3z-Xd5kAzQdahP8JBJbHwwG_t1ngW8li"

decoded_key = key.encode()

cipher_suite = Fernet(decoded_key)
plaintext = cipher_suite.decrypt(ciphertext.encode())

print(plaintext.decode())
```

Output:
> Urmia Noql is a type of sweet that is a delicious souvenir!!
>
> flag : ucf{urum_noql}