4,11-epoxy-12-methoxy-4,5-seco-20(1->5)-abeo-abieta-5(10),6,8,11,13-pentaene
rac-prionitin
salvipisone
(3-rac)-4,12-epoxy-3,11-cyclo-4,5-seco-20(10->5)-abeo-abieta-5(10),6,8,11,13-pentaene
12-hydroxy-4,5-seco-20(10->5)-abeo-abieta-3,5(10),6,8,12-pentaene-11,14-dione