2-(4-hydroxy-4a-methyl-8-methylenedecahydronaphthalen-2-yl)acrylic acid 2-naphthaleneacetic acid, decahydro-4-hydroxy-4a-methyl-alpha,8-bis(methylene)- InChI=1/C15H22O3/c1-9-5-4-6-15(3)12(9)7-11(8-13(15)16)10(2)14(17)18/h11-13,16H,1-2,4-8H2,3H3,(H,17,18