In TeXForm#
TeXForm parses this entry as a character leaf mapped to U+2A87 (LESS-THAN AND SINGLE-LINE NOT EQUAL TO).
The ⪇ symbol (Less-than and single-line not equal to, U+2A87), written as \lneq in LaTeX math mode.
TeXForm parses this entry as a character leaf mapped to U+2A87 (LESS-THAN AND SINGLE-LINE NOT EQUAL TO).