Interesting object

https://www.legacysurvey.org//viewer-dev/?ra=340.2493&dec=-52.7542&layer=ls-dr10&zoom=15

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Yup, nice example of lensing. Sadly known

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Is there any catalog of gravitational lenses?

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If you click look up in SIMBAD you can find some but they have to be referenced. More complete catalogues are in Vizier (accessible from the SIMBAD view at the top). Just copy the coordinates from the SIMBAD search and choose the gravitational lensing catalogue option on the right within Vizier.

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Or if its the correct object in SIMBAD theres also a direct link to a VizieR search page with correct coordinates.

From experience most lens catalogs are usually at the bottom of catalog results (there exist multiple lens catalogs, however most are based on algorithm searches (automated, trained neural networks kind of stuff) and often lack spectroscopic confirmation, so they grade the candidates from almost certain to maybe

Hope this helps

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Thanks!