Task: Answer the multiple-choice question.
Question: Which drug exhibits a 13.192\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a: Nn1c(N2CCCCC2)nc2ccccc21
b: O=C(COc1ccc(F)cc1)Nc1c(C(=O)N2CCC(N3CCCCC3)CC2)oc2ccccc12
c: Cc1cc(NC(=O)CSCC(=O)Nc2nc3c(C)cccc3s2)no1
d: COc1ccc(/C(C)=N/Nc2ccc(C(=O)O)cc2)cc1OC.O=S(=O)(O)O
Answer: a. Nn1c(N2CCCCC2)nc2ccccc21
{#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#}
Nn1c(N2CCCCC2)nc2ccccc21
Nn1c(N2CCCCC2)nc2ccccc21
2-piperidin-1-ylbenzimidazol-1-amine