The story
From (dihy)dro- + spir(or)enone.
Etymology from Wiktionary, CC BY-SA 4.0.
drospirenone
Today it means: A synthetic progestogen C₂₄H₃₀O₃ that is an analog of spironolactone and is used in birth control pills in combination with ethinylestradiol (trademarks Yasmin and Yaz). Full definition →