diff --git a/abbreviations.smi b/abbreviations.smi
index 10b80e5..c36242a 100644
--- a/abbreviations.smi
+++ b/abbreviations.smi
@@ -271,3 +271,4 @@ Adpoc	O=C([*])OC(C)(C12CC3CC(C2)CC(C3)C1)C
 Alloc O=C([*])OCC=C
 AOC	O=C([*])OCC=C
 Bns O=S(CC1=CC=CC=C1)([O*])=O
+PivO [*]OC(C(C)(C)C)=O