2-FURANPROPIONIC ACID, TETRAHYDRO-alpha-(1-NAPHTHYLMETHYL)-, 2-PIPERIDINOETHYL E 2-Furanpropionic acid, tetrahydro-alpha-(1-naphthylmethyl)-, 2-piperidinoethyl ester, oxalate (1:1) 3209-95-8 alpha-(1-Naphthylmethyl)tetrahydro-2-furanpropionic acid 2-piperidinoethyl ester oxalate