You know, what you really purchased was that serial number. The program itself can be downloaded from Adobe at any time. You can try starting a live chat and see if those support people can help you. Good luck.
not sure if the numbers on the discs are unique - if they aren't then they are probably useless for you. if they are unique, you just posted them on a public forum which means anyone can use those serial numbers to try and claim they own a copy of the program.
Either way, I would delete those numbers from a public forum and just provide them in a private email or chat session.
Sorry to tell you but there is no way to get a serial number. Never ever throw away the packaging for software.
You'll have to buy it again. This time don't throw the packaging out.