I think you might have more luck asking it to write a script to do what you'd like. I gave ChatGPT 4 the following input:

"Please give me a python script that writes the chromatic 7th intervals from C to B in eighth notes in a convenient output format like lilypond or musicxml."

The script it gave me worked perfectly, outputting lilypond to stdout and a musicxml file that imported into musescore with no issues.