Question: What drug is the main ingredient referenced in the "drank" of the song Drank in My Cup?

full_context: Document 1: Drankin' &amp; Drivin': Drankin' & Drivin' is the nineteenth studio album by American rapper Z-Ro, released on July 15, 2016 under 1 Deep Entertainment and was distributed by EMPIRE. The album features a guest appearance from fellow American rapper Krayzie Bone, of Bone Thugs n Harmony.
Document 2: Purple Rain (drink): The Purple Rain refers to at least two popular mixed drinks. The more common is a variation on the highball Long Island Iced Tea, substituting Chambord for Triple Sec and a lemon-lime soda for the cola. The other is a long cocktail made from vodka, lemonade, blue Curaçao and grenadine. The name of this version originates from the appearance of the drink as the grenadine is added as the final ingredient, since the sinking of the red grenadine through the blue of the other ingredients creates the impression of purple rain. This drink has many versions depending on where it is made.
Document 3: I Smoke, I Drank: "I Smoke, I Drank", also known as "Do It Big", is the lead single from Body Head Bangerz's debut album, "". The original track features Lil' Boosie and Young Bleed but only the remix of the song, "I Smoke, I Drank (Remix)" featuring YoungBloodZ, charted. Though only the latter charted, it is often credited as simply "I Smoke, I Drank". This single, along with Body Head Bangerz's second single, "Can't Be Touched" featuring Trouble Tha Truth, helped the group earn widespread recognition among hip hop enthusiasts.
Document 4: Kirko Bangz: Kirk Jerel Randle (born August 20, 1989), better known by his stage name Kirko Bangz, is an American rapper, singer, songwriter and record producer signed to Atlantic Records. He is best known for his single, "Drank in My Cup" which was released in 2011 and peaked at number 28 on the US "Billboard" Hot 100 chart.
Document 5: Drink You Away: "Drink You Away" is a song recorded by American singer and songwriter Justin Timberlake for his fourth studio album, "The 20/20 Experience – 2 of 2" (2013). It was written and produced by Timberlake, Timothy "Timbaland" Mosley and Jerome "J-Roc" Harmon, with additional writing from James Fauntleroy. It was sent to US country radio stations on November 23, 2015 as the fourth and final single from the album. Musically, it was defined by critics as a multi-genre song including classic-rock, country-pop, gospel-blues and Memphis soul. Lyrically, on the track, Timberlake compares love to alcoholism while making references to several alcoholic brands including Jack Daniel's and Jim Beam. As of May 2016, the song has sold over 600,000 copies in the US.
Document 6: Dr Pepper: Dr Pepper is a carbonated soft drink marketed as having a unique flavor. The drink was created in the 1880s by Charles Alderton in Waco, Texas and first served around 1885. Dr Pepper was first nationally marketed in the United States in 1904, and is now also sold in Europe, Asia, Canada, Mexico, Australia, and South America, as well as New Zealand and South Africa as an imported good. Variants include a version without high fructose corn syrup, Diet Dr Pepper, as well as a line of additional flavors, first introduced in the 2000s.
Document 7: Pruno: Pruno, or prison wine, is an alcoholic beverage variously made from apples, oranges, fruit cocktail, candy, ketchup, sugar, milk, and possibly other ingredients, including crumbled bread. Bread supposedly provides the yeast for the pruno to ferment. Pruno originated in (and remains largely confined to) prisons and jails, where it can be produced with the limited selection of equipment and ingredients available to inmates. The concoction can be made using only a plastic bag, hot running water, and a towel or sock to conceal the pulp during fermentation. The end result has been colorfully described as a "bile flavored wine-cooler", although flavor is often not the primary objective. Depending on the time spent fermenting (always balanced against the risk of discovery by the officers), the sugar content, and the quality of the ingredients and preparation, pruno's alcohol content by volume can range from as low as 2% (equivalent to a very weak beer) to as high as 14% (equivalent to a strong wine).
Document 8: Drank in My Cup: "Drank in My Cup" is a song by American rapper Kirko Bangz. It is taken from his mixtape "Progression 2: A Young Texas Playa". The Sound M.O.B. produced single is his highest charting song to date and has sold 1,000,000 copies digitally. The song uses the word 'drank' a number of times as a clear reference to purple drank, a codeine-promethazine cocktail served in Sprite, a drink symbolic of the H-Town hip-hop scene, classically associated with chopped and screwed music. The song is full of references to this music scene, including the slow, relaxed rhythm of the song.
Document 9: Candy (Drippin' Like Water): "Candy (Drippin' Like Water)", is the third single by Snoop Dogg from his 2006 album "Tha Blue Carpet Treatment", produced by Rick Rock. It features E-40, MC Eiht, Goldie Loc and Tha Dogg Pound (Daz Dillinger and Kurupt), and Ladybug on the chorus. The song title and sample come from Ladybug Mecca's vocals on Digable Planets's "9th Wonder (Blackitolism)". "Candy" refers to a high gloss paint finish applied to automobiles. In the song it is also used as a euphemism for marijuana, cocaine and sex.
Document 10: Shrub (drink): In terms of mixed drinks, shrub is the name of two different, but related, acidulated beverages. One type of shrub is a fruit liqueur that was popular in 17th and 18th century England, typically made with rum or brandy mixed with sugar and the juice or rinds of citrus fruit.
Document 11: Sing About Me, I'm Dying of Thirst: "Sing About Me, I'm Dying of Thirst" is a song by American hip hop recording artist Kendrick Lamar, from his major label debut studio album "Good Kid, M.A.A.D City" (2012). The song, which appears as the tenth track on the album, was released as an ordinary album track. However, it is one of Lamar's lengthier songs, clocking in at twelve minutes and three seconds. The song is actually split into two parts throughout the track, the first part notably titled ""Sing About Me"", which is about exactly seven minutes, and the second part notably titled ""I'm Dying of Thirst"", is approximately two minutes and fifty-seconds. There is a skit in between the two parts and another one right after the second section.
Document 12: Punch (drink): Punch is a wide assortment of drinks, both non-alcoholic and alcoholic, generally containing fruit or fruit juice. The drink was introduced from India to the United Kingdom in the early seventeenth century, and from there its use spread to other countries. Punch is typically served at parties in large, wide bowls, known as "punch bowls".
Document 13: Grasshopper (cocktail): A grasshopper is a sweet, mint-flavored, after-dinner drink. The name of the drink derives from its green color, which comes from crème de menthe. The drink reputedly originated at Tujague's, a landmark bar in the French Quarter of New Orleans, Louisiana, and was invented by its owner, Philip Guichet. The drink gained popularity during the 1950s and 1960s throughout the American South.
Document 14: Poly drug use: Poly drug use refers to the use of two or more psychoactive drugs in combination to achieve a particular effect. In many cases one drug is used as a base or primary drug, with additional drugs to leaven or compensate for the side effects of the primary drug and make the experience more enjoyable with drug synergy effects, or to supplement for primary drug when supply is low.
Document 15: Purple drank: Purple drank is a slang term for a concoction which includes a prescription-strength cough syrup used in a manner inconsistent with its labeling, thus making it a recreational drug. The mixture became popular in the hip hop community in the southern United States in the 1990s, originating in Houston.
ground_truth: cough syrup