The song was first uploaded on September 19th at 3:55 AM (following the Benzene Series' pattern, for a few years straight it's uploaded at the exact same time). It's a "reply" song to Owata-P's other hit song Paradichlorobenzene. It only took one day (September 20th) for Antichlorobenzene to reach hall of fame (exceeding 100,000 views) however it took an entire year for it to reach 1 million views (May 17th 2011)
Antichlorobenzene is featured in the Exit Tunes compilation "Vocalonexus". Although it's not as popular as it's counterpart Paradichlorobenzene, Antichlorobenzene is the only song in the series to have more mylist (favorite) than comments in Nico Nico Douga; despite the fact that it has reached over 1 million views.
It is the fourth song of the Benzene Series; and it mainly talks about the replying Len's Paradichlorobenzene. Due to it's vague lyrics interpretations can be easily made here and there. Many of the lyrics and thoughts were written upside down; and overall, Antichlorobenzene is the only song in the series to not be a real chemical substance (Benzene, Nitrobenzene, Paradichlorobenzene, and Tolune are all compounds).