You can find most Hex codes at [Link: irdb.tk]

Select LG from the dropdown, click Get IR Codes
Then scan down the list for "LG TVs:"

The entry "LG TVs: Protocol NEC1 device 4 subdevice -1" has the majority of the buttons from the magic remote.

(Select the "Pronto Hex" tab at the top of the page)

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There is also this page [Link: gitlab.com]
Which does have listings for buttons like 3D, however I dont know how to convert them to Pronto format.