C6H5.CH(OH).COOH

from The Collaborative International Dictionary of English v.0.48

amygdalic \am`yg*dal"ic\ ([.a]m`[i^]g*d[.a]l"[i^]k [a^]s"[i^]d),
   n. (Chem.)
   An organic acid ({C6H5.CH(OH).COOH}) extracted from bitter
   almonds; called also {mandelic acid} and
   {[alpha]-Hydroxybenzeneacetic acid}.
   [PJC]