Find largest filename from ls -l output

You are given a multi-line string (via stdin) that represents the output of `ls -l`, with one entry per line. Each file line follows the typical `ls -l` format: `<mode> <links> <owner> <group> <size> <month> <day> <time_or_year> <name...>` Task: print the **file name** (the `<name...>` part) of the entry with the **largest `<size>`**. Requirements: - Correctly parse columns so that you read the numeric `size` field. - File names may contain spaces, so you cannot assume the name is a single token. - Ignore non-entry lines such as `total N` if present. Output only the file name of the largest file (any tie-breaking is acceptable unless otherwise specified).