7MI 7mi methyl (2S,4aR,4bS,5S,6aS,10aS,10bS,12aS)-2,4b,7,7,10a,12a-hexamethyl-12-methylidene-5-oxidanyl-1,4,6,8-tetrakis(oxidanylidene) -5,6a,9,10,10b,11-hexahydro-4aH-naphtho[1,2-h]isochromene-2-carboxylate 7MI