Exploring 11921. To explore a different substance…

(2E)-4-Hydroxy-4-phenylbut-2-enoic acid
 11921  C10H10O3  178.185
 InChI=1S/C10H10O3/c11-9(6-7-10(12)13)8-4-2-1-3-5-8/h1-7,9,11H,(H,12,13)/b7-6+
 JJTRLNDAHGRZGZ-VOTSOKGWSA-N This stereoisomer Any stereoisomer
 OC(c1ccccc1)/C=C/C(=O)O