Task: Answer the MCQ question.
Query: Which drug exhibits a -13.685\% 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 additional words.
Options:
a Cc1nc(-c2ccccc2)sc1C(=O)/C=C/c1ccc(Cl)cc1
b Nc1ncnc2c1ncn2CCNCCc1ccccc1
c COC(=O)c1cc(C)nc(Sc2ccccc2NC(C)=O)n1
Answer: b. Nc1ncnc2c1ncn2CCNCCc1ccccc1
{#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#}
Nc1ncnc2c1ncn2CCNCCc1ccccc1
Nc1ncnc2c1ncn2CCNCCc1ccccc1
9-[2-(2-phenylethylamino)ethyl]purin-6-amine