"Drosophilin B"@en . "C004262" . . . "pleuromutilin"@en . "pleuromutilin"@en . . "C0071283" . . "octahydro-5,8-dihydroxy-4,6,9,10- tetramethyl-6-vinyl-3a,9-propano-3aH-cyclopenta- cycloocten-1(4H)-one 8-glycolate"@en . .