Problem statement: Answer the multiple-choice question.
Question: Which drug exhibits a 1.980\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a) O=C(Nc1ccccc1)NC1CCS(=O)(=O)C1
b) CN(Cc1ccccc1)c1ccc([N+](=O)[O-])cc1C(=O)O
c) CN(C)CCOc1nc(-c2ccccc2)nc2c1oc1ccccc12
d) COC(=O)CC1SC(=O)NC1=O
Answer: d. COC(=O)CC1SC(=O)NC1=O
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: Which {#compound|drug!} {#has|exhibits!} a {herg_central_at_1uM#}{herg_central_at_1uM__units} {herg_central_at_1uM__names__noun}?
Constraint: You must select none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%herg_central_at_1uM%}
Answer: {%multiple_choice_result}. {SMILES#}
COC(=O)CC1SC(=O)NC1=O
COC(=O)CC1SC(=O)NC1=O
methyl2-(2,4-dioxo-1,3-thiazolidin-5-yl)acetate