This sound effect can be found on Cartoon Trax Volume 1, which was made by The Hollywood Edge. The 1st ding is very similar to XYLOPHONE - BELL TONE: IDEA!, MUSIC, PERCUSSION, TWINKLING 02 on Series 1000 Sound Effects Library. Links: https://soundeffects.fandom.com/wiki/Hollywoodedge,_Quick_Double_Bell_Di_CRT015001#Audio_Samples