Task: Answer the multiple-choice question.
Query: Which compound has a 18.680\% 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. O=C(COc1ccccc1)NC1CCSC1=O
b. O=S(=O)(Cc1ccccc1)N1CCN(c2ncccn2)CC1
Answer: b. O=S(=O)(Cc1ccccc1)N1CCN(c2ncccn2)CC1
{#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=S(=O)(Cc1ccccc1)N1CCN(c2ncccn2)CC1
O=S(=O)(Cc1ccccc1)N1CCN(c2ncccn2)CC1
2-(4-benzylsulfonylpiperazin-1-yl)pyrimidine