176260-42-7 | 2-Butenoic acid,4,4'-[(1aR,5R,5aS,6R,7aS,8aR,10R,10aS,11aS,13S)-1a,2,5a,6,7,8a,9,10-octahydro-2,7,9,11-tetraoxo-5,13-dipentyl-10,6-(epoxymethano)bisoxireno[4,5]benzo[1,2-d:1',2'-g][2]benzopyran-7a,11a(5H,11H)-diyl]bis[2-methyl-,(2E,2'E)- | C38H44 O12 |