LevoCetirizine Dihydrochloride

2-(2-{4-[(R)-azin-1-yl}ethoxy)cetc cid|LevoCetirizine Dihydrochloride ; (R)-2-[2-[4-[(4-Chlorophenyl)phenylmethyl]piperazin-1-yl]ethoxy]acetic acid dihydrochloride|Levocetirizine;