Task: Answer the MCQ question.
Question: Which drug exhibits a 8.497\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a) O=c1oc(-c2cccs2)nc2ccccc12
b) COc1ccc(Cl)cc1C(=O)O/N=C(\N)c1ccncc1
Answer: a. O=c1oc(-c2cccs2)nc2ccccc12
{#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#}
O=c1oc(-c2cccs2)nc2ccccc12
O=c1oc(-c2cccs2)nc2ccccc12
2-thiophen-2-yl-3,1-benzoxazin-4-one