HYDROXY PHENYL GLYCINE DANE SALT;potassium (R)-[(3-ethoxy-1-methyl-3-oxoprop-1-enyl)amino](4-hydroxyphenyl)acetate;D-4-Hydroxyphenylglycine dane salt;D-(4-Hydroxyphenyl)-glycine dane salt potassium ethyl;(R)-alpha-((3-Ethoxy-1-methyl-3-oxo-1-propenyl)ami