In TeXForm#
TeXForm parses this entry as a character leaf mapped to U+2196 (NORTH WEST ARROW).
\to\rightarrow\longrightarrow\mapsto\xrightarrow\Rightarrow\Leftrightarrow\leftarrow\longmapsto\hookrightarrow\Longrightarrow\nwarrow
\nwarrowSymbol
The ↖ symbol (North west arrow, U+2196), written as \nwarrow in LaTeX math mode.