1-phenanthrenecarboxylic acid, 1,2,3,4,4a,4b,5,6,10,10a-decahydro-7-(1-hydroxy-1-methylethyl)-1,4a-dimethyl-, (1R,4aR,4bR,10aR)- 15-hydroxyabieta-7,13-dien-18-oic acid InChI=1/C20H30O3/c1-18(2,23)14-7-8-15-13(12-14)6-9-16-19(15,3)10-5-11-20(16,4)17(21)22/h6,12,15-16,23H,5,7-11H2,1-4H3,(H,21,22)/t15-,16+,19+,20+/m0/s