IPsec Encryption key for debugging in Wireshark

[Freshman]

Hello, I would like to analyze packet capture of IPsec communication in Wireshark, for that I need Encryption Key (and "initiator's cookie", but I have that in capture). Is there any way how to get this from pfSense? Perhaps some appropriate logging level(s) in "IPsec Logging Controls" which would show the key in "System Logs/IPsec" log?
I want it for debugging and learning purposes.