(2S,16S,17S,18R,19R,20R,21S,22S,23S)-5,6,9,17,19,21-Hexahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-1,11-dioxo-1,2-dihydro-2,7-(epoxy[1,11,13]pentadecatrienoimino)naphtho[2,1-b]furan-8-carbaldehyde dipropylhydrazone AIDS-113672 AIDS113672