Task: Answer the multiple choice question.
Query: Which compound has a 2.753\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, or c without using any other words.
Options:
(a) O=C(NCCN1CCCC1=O)Nc1ccccc1
(b) O=C(O)CCn1c(-c2ccccn2)nc2ccccc21
(c) CC(C)=CCc1c2c(c3occ(-c4ccc(O)cc4)c(=O)c3c1O)C=CC(C)(C)O2
Answer: a. O=C(NCCN1CCCC1=O)Nc1ccccc1
{#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(NCCN1CCCC1=O)Nc1ccccc1
O=C(NCCN1CCCC1=O)Nc1ccccc1
1-[2-(2-oxopyrrolidin-1-yl)ethyl]-3-phenylurea