Task: Answer the multiple-choice question.
Query: Which drug exhibits a 0.903\% 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 other words.
Options:
a. O=C(COc1ccccc1)N1CCN(C(=O)c2cccs2)CC1
b. CCCCCc1nnc(N)s1
c. CCOc1ccc(NC2c3ccccc3C(=O)N2Cc2ccco2)cc1
Answer: b. CCCCCc1nnc(N)s1
{#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#}
CCCCCc1nnc(N)s1
CCCCCc1nnc(N)s1
5-pentyl-1,3,4-thiadiazol-2-amine