15-Deacetylsergeolide 3,13-Ethano-1H,10H-furo[3,4-c]furo[2',3':6,7]naphtho[2,3-b]pyran-3(3aH)-carboxylic acid, 4,5,6a,7,7a,8,12a,13-octahydro-4,14,15-trihydroxy-8,12a-dimethyl-5,10-dioxo-, methyl ester, [3S-(3.alpha.,3a.alpha.,4.alpha.,6a.alpha.,7a.beta.,8.beta.,12a.alpha.,13.alpha.,13aS*,14S*,15R*)] NSC364170 SERGEOLIDE,DESACETYL