2-Thiophenecarboxylic acid, compd. with 8-(2-phenylethyl)-1-oxa-3,8-diazaspiro(4.5)decan-2-one (1:1) 76652-72-7 8-(2-Phenylethyl)-1-oxadiazaspiro(4,5)decan-2-one-2-thiophenecarboxylate Decasilate