Task: Answer the multiple-choice question.
Question: Which drug exhibits a 11.778\% human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
[a] COc1cccc(CN2CCN(C(=O)Nc3ccc([N+](=O)[O-])cc3)CC2)c1
[b] C=CCOc1ccc(/C=N/Nc2ccccn2)cc1OC
[c] COc1ccccc1N1CCN(c2ccc(Cl)nn2)CC1
[d] CC1=C(C(=O)OC2CCCCC2)C(c2cccc([N+](=O)[O-])c2)NC(=O)N1
Answer: c. COc1ccccc1N1CCN(c2ccc(Cl)nn2)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#}
COc1ccccc1N1CCN(c2ccc(Cl)nn2)CC1
COc1ccccc1N1CCN(c2ccc(Cl)nn2)CC1
3-chloro-6-[4-(6-methoxyphenyl)piperazin-1-yl]pyridazine