Task: Text Categorization
Input (English): Question: The muscle relaxant suxetonium (succinylcholine), which was designed from decamethonium by substitution of two ethylene groups by two ester functions, susceptible to a hydrolytic metabolism, is a: 
 Options:  <0> Prodrug <1> Hard drug. <2> Apolar drug. <3> Chiral drug. <4> Soft drug
Output (English): pharmacology