(1S,3Z)-4-Methylene-3-[(2E)-2-[(1R,3aS,7aR)-octahydro-7a-methyl-1-[(1R,4S)-1,4,5-trimethylhexyl]-4H-inden-4-ylidene]ethylidene]cyclohexanol; (3S,5Z,7E)-9,10-Secoergosta-5,7,10(19)-trien-3-ol; Ergocalciferol EP Impurity G
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