1,1-cyclopentanedicarboxylic acid, 2-(1-chloroethyl)-, diethyl ester InChI=1/C13H21ClO4/c1-4-17-11(15)13(12(16)18-5-2)8-6-7-10(13)9(3)14/h9-10H,4-8H2,1-3H diethyl 2-(1-chloroethyl)cyclopentane-1,1-dicarboxylate