Task: Answer the multiple-choice question.
Question: Which drug exhibits a 4.330\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
(a) CN(Cc1cccs1)c1ncnc2sccc12
(b) COCCNC(=O)CCCN1C(=O)c2ccccc2Sc2ncccc21
Answer: a. CN(Cc1cccs1)c1ncnc2sccc12
{#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#}
CN(Cc1cccs1)c1ncnc2sccc12
CN(Cc1cccs1)c1ncnc2sccc12
N-methyl-N-(thiophen-2-ylmethyl)thieno[2,3-d]pyrimidin-4-amine