Problem statement: Answer the multiple choice question.
Query: Which compound exhibits a -3.223\% 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] COC(=O)c1cc(OC)c(OC)cc1NC(=O)c1ccco1
[b] Nc1ncnc2c1ncn2CCN1CCCCC1
[c] Cc1ccc2cc(CCNC(=O)c3cccc([N+](=O)[O-])c3)c(=O)[nH]c2c1C
[d] [N-]=[N+]=CC(=O)CC(c1ccccc1)N1C(=O)c2ccccc2C1=O
Answer: b. Nc1ncnc2c1ncn2CCN1CCCCC1
{#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#}
Nc1ncnc2c1ncn2CCN1CCCCC1
Nc1ncnc2c1ncn2CCN1CCCCC1
9-(2-piperidin-1-ylethyl)purin-6-amine