2-Propenoic acid, 2-methyl-, 9-(chloromethyl)dodecahydro-8,9-dihydroxy-3,6-bis(methylene)-2-oxoazuleno[4,5-b]furan-4-yl ester, [3aR-(3a.alpha.,4.alpha.,6a.alpha.,8.beta.,9.alpha.,9a.alpha.,9b.beta.)]- LINICHLORINA A NSC304940