3-(2-hydroxyphenyl)propanoate + H(+) => 3,4-dihydrocoumarin + H2O
3-(2-hydroxyphenyl)propanoate + h(+) => 3,4-dihydrocoumarin + h2o
3-(2-hydroxyphenyl)propanoate + H(+) => 3,4-dihydrocoumarin + H2O
3-(2-hydroxyphenyl)propanoate + h(+) => 3,4-dihydrocoumarin + h2o