diff --git a/data/carboxylic_acids/dataset.csv b/data/carboxylic_acids/dataset.csv
index f8622c3f8..85745d4a1 100644
--- a/data/carboxylic_acids/dataset.csv
+++ b/data/carboxylic_acids/dataset.csv
@@ -1,5 +1,6 @@
 smiles
 CCCCCCCCC=CCCCCCCCC(=O)O
+CC(=O)OC1=CC=CC=C1
 OC(=O)CCCC#C
 OC(=O)CNCC=C
 OC(=O)CNCC#C