AIDS-137001 AIDS137001 NSC640463 Plumeride coumarate Spiro[cyclopenta[c]pyran-7(1H),2'(5'H)-furan]-4-carboxylic acid, 1-(hexopyranosyloxy)-4a,7a-dihydro-4'-[1-[[(2E)-3-(4-hydroxyphenyl)-1-oxo-2-propenyl]oxy]ethyl]-5'-oxo-, methyl ester