Can I extract serial number from an already-installed Flash CS5.5?

[D_A_Renoir]

Years and years ago I bought Adobe Flash CS 5.5. 

I cannot afford the new CC. I lost the serial number because it was in an email that has since gone defunct and I cannot access it anymore.
I still have the installer. Can I somehow extract the serial number from the already-installed Flash in my old computer? Like, it's not like I'm trying to crack the software. I have it already. I just need to reinstall it on a new computer. 

[Colin Holgate]

Go to this page, and it will show you your products and serial numbers:

https://account.adobe.com/products

I am not sure though whether the CS5.5 license activation system is still working.

[n. tilcheff]

I have bought DVD media with a printed serial number of Flash CS 5.5 at the time and it installs and works just fine to this day.

It is also much more stable, has very few bugs and performs much better than any version of Animate. 

[D_A_Renoir]

Darn, it's not listed there. I must have forgotten to register it after installation