2H-Naphtho(1,8-bc)furan-2-one, 6-(2-(3-furanyl)ethyl)decahydro-6-hydroxy-2a,5a,7-trimethyl-, (2aS-(2aalpha,5abeta,6alpha,7alpha,8aalpha,8balpha))- 465-92-9 Marrubiin NSC 36693