lupan-3beta,20-diol <=> (S)-2,3-epoxysqualene + H2O
lupan-3beta,20-diol <=> (s)-2,3-epoxysqualene + h2o
lupan-3beta,20-diol <=> (S)-2,3-epoxysqualene + H2O
lupan-3beta,20-diol <=> (s)-2,3-epoxysqualene + h2o