Task: Answer the MCQ question.
Query: Which drug exhibits a 3.385\% 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=C(N/N=C/c1cccs1)c1ccc2nc[nH]c2c1
b. Cc1ccc(-c2cc(C(F)(F)F)n3nc(C(=O)Nc4c(C)n(C)n(-c5ccccc5)c4=O)cc3n2)cc1
Answer: a. O=C(N/N=C/c1cccs1)c1ccc2nc[nH]c2c1
{#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=C(N/N=C/c1cccs1)c1ccc2nc[nH]c2c1
O=C(N/N=C/c1cccs1)c1ccc2nc[nH]c2c1
N-[(E)-thiophen-2-ylmethylideneamino]-3H-benzimidazole-5-carboxamide