(1R)-1,2,2-Trimethyl-3c-(N-furfurylcarbamoyl)cyclopentan-carbonsaeure-(1r) natrium-salz 67814-69-1 Cyclopentanecarboxylic acid, 3-(((2-furanylmethyl)amino)carbonyl)-1,2,2-trimethyl-, monosodium salt, (1R-cis)-