Task: Answer the multiple choice question.
Query: Which compound has a 18.966\% 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, d, or e without using any additional words.
Options:
a. COc1cccc(OC)c1OCCNCCO
b. CN(C)CCCN(C(=O)c1ccc2c(c1)CCCC2)c1nc2ccc(Cl)cc2s1.Cl
c. CN(C)c1ccc(/C=[N+](\[O-])C(C)(C)/C=N/O)cc1
d. O=C(NCc1ccccc1)C(c1ccncc1)N(C(=O)c1csnn1)C1CC1
e. O=C(NNC(=S)NCc1ccccc1)c1cccc([N+](=O)[O-])c1
Answer: a. COc1cccc(OC)c1OCCNCCO
{#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#}
COc1cccc(OC)c1OCCNCCO
COc1cccc(OC)c1OCCNCCO
2-[2-(2,6-dimethoxyphenoxy)ethylamino]ethanol