17,19-Dinoratis-15-ene-4,13,14-tricarboxylic acid, 16-(1-methylethyl)-, (4alpha,8alpha,12alpha,13R,14S)-, polymer with (4alpha,8alpha,12alpha,13R,14R)-16-(1-methylethyl)-17,19-dinoratis-15-ene-4,13,14-tricarboxylic acid cyclic 13,14-anhydride and 1,2,3-propanetriol 68214-19-7 Abietic acid, fumaric acid, maleic anhydride, glycerol resin