Task: Please give me a molecule SMILES based on the description below.
Description: The molecule is a butan-4-olide having a methylene group at the 3-position. It has a role as a gastrointestinal drug and an anti-ulcer drug.
Result: C=C1CCOC1=O
Task: Please {#give me|create|generate!} a {#molecule |!}{SMILES__description} based on the {#text |!}description{# below|!}.
Description: {description#}
Result: {SMILES#}
The molecule is a butan-4-olide having a methylene group at the 3-position. It has a role as a gastrointestinal drug and an anti-ulcer drug.