Task: Answer the multiple choice question.
Query: Which compound has a 1.645\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any additional words.
Options:
a: Cc1sc2ncnc(OCC(=O)NCc3cccs3)c2c1C
b: O=C1CN(c2nc(-c3cccnc3)nc3scc(-c4ccccc4)c23)CCN1
c: CCCOc1cccc(C(=O)NCCNC(=O)c2cnccn2)c1
Answer: b. O=C1CN(c2nc(-c3cccnc3)nc3scc(-c4ccccc4)c23)CCN1
{#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=C1CN(c2nc(-c3cccnc3)nc3scc(-c4ccccc4)c23)CCN1
O=C1CN(c2nc(-c3cccnc3)nc3scc(-c4ccccc4)c23)CCN1
4-(5-phenyl-2-pyridin-3-ylthieno[2,3-d]pyrimidin-4-yl)piperazin-2-one