2-(1-Pyrrolidinyl)ethyl o-(ethoxymethyl)carbanilate oxalate (1:1) 80171-57-9 AMK 223 CARBANILIC ACID, o-(ETHOXYMETHYL)-, 2-(1-PYRROLIDINYL)ETHYL ESTER, OXALATE (1:1) o-(Ethoxymethyl)carbanilic acid 2-(1-pyrrolidinyl)ethyl ester oxalate (1:1)