Synonyms: (1S,3Z)-3-[(2E)-2-[(1R,3aR,7aS)-7a-methyl-1-[(2R)-6-methylheptan-2-yl]-2,3,3a,5,6,7-hexahydro-1H-inden-4-ylidene]ethylidene]-4-methylidene-cyclohexan-1-ol;7-Dehydrocholesterol, irradiated;9,10-Secocholestra-5,7,10(19)-trien-3-ol, (3beta,5Z,7E)-