In TeXForm#
TeXForm parses this entry as a character leaf mapped to U+22D8 (VERY MUCH LESS-THAN).
Collapse llless to the shorter lll character.
\llless \lllIn Relations103
All 103 in Relations\lllessSymbol
The ⋘ symbol (Very much less-than, U+22D8), written as \llless in LaTeX math mode.