Task: Answer the MCQ question.
Question: Which drug exhibits a 6.599\% 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, or d without using any other words.
Options:
a. O=S(=O)(c1cccc2nsnc12)N1CCNCC1
b. COC(=O)c1cc2ccccc2n1Cc1ccc(Cl)nc1
c. Cc1nn(C)c(Cl)c1CN1CCN(CC(C)C)C(CCO)C1
d. CC(C)CC(=O)N1CCN(Cc2cccc(F)c2)CC1
Answer: a. O=S(=O)(c1cccc2nsnc12)N1CCNCC1
{#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#}
O=S(=O)(c1cccc2nsnc12)N1CCNCC1
O=S(=O)(c1cccc2nsnc12)N1CCNCC1
4-piperazin-1-ylsulfonyl-2,1,3-benzothiadiazole