Very bad move.
You do not need long titles in your listings. You do need accurate keyword phrases that people might use to look for what you create and are trying to sell.
Try "abstract oil painting" at the beginning of the listing title if that is accurate, followed by more descriptive words if you like or followed by a creative and imaginative name of the painting. Do not break up the keyword phrase or rearrange the words.
There were almost 600 searches on Google last month alone for "abstract oil painting" and using this keyword phrase should help you reach at least a few of those searches.
I suggest using Google's keyword research tool to find more good and appropriate keyword phrases for your listings;
https://adwords.google.com/select/KeywordToolExternal?forceLegacy=trueUsing keywords does not spell the end of creativity. But creative writing does become more challenging.