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That is amazing. Thank you, Jason. It really inspires me. And, thanks a lot for your offer. Sure, I will ask you in the future if I stumble some challenges that I can't overcome.
Hello Robert. I use Mathematica 12.1 under macOS Catalina ver. 10.15.7. I ran the same codes and got the exact output as yours. I wonder why... perhaps the codes don't work in Ver. 12? I also notice the double and triple bond visualization...