Question: Plastik is an album named after what type of organic compound?
Context: Propargyl bromide, also known as 3-bromo-1-propyne, is an organic compound with the chemical formula CHCCHBr.  It is a halogenated organic compound consisting of propyne with a bromine substituent on the methyl group.  It has a lachrymatory effect, like related compounds.  The compound is a useful reagent in organic synthesis. "N","N"-Diisopropylethylamine, or Hünig's base, DIPEA or DIEA, is an organic compound and an amine.  It is used in organic chemistry as a base.  Because the nitrogen atom is shielded by the two isopropyl groups and an ethyl group only a proton is small enough to easily fit.  Like 2,2,6,6-tetramethylpiperidine, this compound is a good base but a poor nucleophile, which makes it a useful organic reagent.  Hünig's base is named after the German chemist Siegfried Hünig.  The compound is a colourless liquid. Diazo refers to a type of organic compound called diazo compound that has two linked nitrogen atoms (azo) as a terminal functional group.  The general formula is RC=N.  The simplest example of a diazo compound is diazomethane.  The electronic structure of diazo compounds involves a positive charge on the central nitrogen and negative charge distributed between the terminal nitrogen and the carbon.  Some of the most stable diazo compounds are α-diazo-ß-diketones and α-diazo-ß-diesters since the negative charge is delocalized into the carbonyls.  In contrast, most alkyldiazo compounds are explosive.  A commercially relevant diazo compound is ethyl diazoacetate (NCHCOOEt).  A group of isomeric compounds with only few similar properties are the diazirines, where the carbon and two nitrogens are linked as a ring. Piperidine is an organic compound with the molecular formula (CH)NH.  This heterocyclic amine consists of a six-membered ring containing five methylene bridges (–CH–) and one amine bridge (–NH–).  It is a colorless liquid with an odor described as objectionable, and typical of amines. the name comes from the genus name "Piper", which is the Latin word for pepper.  Although piperidine is a common organic compound, it is best known as a representative structure element within many pharmaceuticals and alkaloids. Phthalocyanine is an organic compound with the formula (CHN)H.  It is classified as an aromatic macrocyclic compound.  The organic compound is only of theoretical or specialized interest, but its metal complexes are valuable as dyes, pigments, and catalysts. An organic acid is an organic compound with acidic properties.  The most common organic acids are the carboxylic acids, whose acidity is associated with their carboxyl group –COOH.  Sulfonic acids, containing the group –SOOH, are relatively stronger acids.  Alcohols, with –OH, can act as acids but they are usually very weak.  The relative stability of the conjugate base of the acid determines its acidity.  Other groups can also confer acidity, usually weakly: the thiol group –SH, the enol group, and the phenol group.  In biological systems, organic compounds containing these groups are generally referred to as organic acids. Plastik (German for "Plastic") is the sixth studio album by the German band Oomph! .  With this album, the band changed its style to feature less aggressive instruments and vocals, more pronounced synthesizer riffs, overall softer vocals and progressed drumming and guitar playing, as well as uncommon time signatures.  This melody-over-aggression approach would be the style the band would adopt for their signature sound, making this album a turning point in the band's sound. An organic acid anhydride is an acid anhydride that is an organic compound.  An acid anhydride is a compound that has two acyl groups bonded to the same oxygen atom.  A common type of organic acid anhydride is a carboxylic anhydride, where the parent acid is a carboxylic acid, the formula of the anhydride being (RC(O))O. Symmetrical acid anhydrides of this type are named by replacing the word "acid" in the name of the parent carboxylic acid by the word "anhydride".  Thus, (CHCO)O is called "acetic anhydride."  Mixed (or unsymmetrical) acid anhydrides, such as acetic formic anhydride (see below), are known. An organic compound is virtually any chemical compound that contains carbon, although a consensus definition remains elusive and likely arbitrary.  Organic compounds are rare terrestrially, but of central importance because all known life is based on organic compounds.  The most basic petrochemicals are considered the building blocks of organic chemistry. Plastic is material consisting of any of a wide range of synthetic or semi-synthetic organic compounds that are malleable and so can be molded into solid objects.
Answer: synthetic or semi-synthetic