abieta-7,13-dien-18,18-diol = abieta-7,13-dien-18-al + H2O
abieta-7,13-dien-18,18-diol = abieta-7,13-dien-18-al + h2o
abieta-7,13-dien-18,18-diol = abieta-7,13-dien-18-al + H2O
abieta-7,13-dien-18,18-diol = abieta-7,13-dien-18-al + h2o