Task: Answer the multiple-choice question.
Question: Which drug exhibits a 1.913\% 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 additional words.
Options:
(a) Cc1ccc2c(Cl)c(C)c(N3CCCCC3)nc2n1
(b) O=C(Nc1ccc2c(c1)OCCO2)C1CCCN1C(=O)Nc1ccccc1
(c) CCOC(=O)N1CCN(Cc2nc(CC3CC3)no2)CC1
(d) CCOc1cc(/C=C2\C(=O)NN(c3ccccc3)C2=O)cc([N+](=O)[O-])c1O
Answer: a. Cc1ccc2c(Cl)c(C)c(N3CCCCC3)nc2n1
{#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#}
Cc1ccc2c(Cl)c(C)c(N3CCCCC3)nc2n1
Cc1ccc2c(Cl)c(C)c(N3CCCCC3)nc2n1
4-chloro-3,7-dimethyl-2-piperidin-1-yl-1,8-naphthyridine