Task: Answer the following question about the molecule with SMILES COCc1cccc(C[C@H](O)/C=C/[C@H]2[C@H](O)CC(=O)[C@@H]2CCSCCCC(=O)OC)c1.
Question: Please describe this drug.
Result: Rivenprost is under investigation in clinical trial NCT00296556 (Therapeutic Study of ONO-4819CD for Ulcerative Colitis).
Task: Answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
COCc1cccc(C[C@H](O)/C=C/[C@H]2[C@H](O)CC(=O)[C@@H]2CCSCCCC(=O)OC)c1
COCC1=CC=CC(=C1)C[C@@H](/C=C/[C@H]2[C@@H](CC(=O)[C@@H]2CCSCCCC(=O)OC)O)O
methyl4-[2-[(1R,2R,3R)-3-hydroxy-2-[(E,3S)-3-hydroxy-4-[3-(methoxymethyl)phenyl]but-1-enyl]-5-oxocyclopentyl]ethylsulfanyl]butanoate
Please describe this drug.