SMILES: CC(C1CC(OC1=O)(C)C)OS(=O)(=O)C
Description: The molecule is a butan-4-olide having a 1-[(methylsulfonyl)oxy]ethyl group at the 3-position and two methyl substituents at the 5-position. It is a butan-4-olide and a methanesulfonate ester.