mithramycin
/ˌmɪθrəˈmʌɪsɪn/Pharmacology
noun
An antibiotic, C52H76O24, produced by some species of Streptomyces, especially S. argillaceus and S. tanashiensis, and formerly used in the treatment of some cancers.
Origin
1960s. From mithra- + -mycin.