Task: Answer the multiple-choice question.
Question: Which compound has a 12.657\% 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 additional words.
Options:
(a) O=[N+]([O-])c1cc(Br)c2nsnc2c1N1CCOCC1
(b) CC1=NN(c2nc3ccccc3s2)C(O)(C(F)(F)F)C1
(c) O=[N+]([O-])c1cc(C(F)(F)F)ccc1-n1nnc2ccccc21
(d) CN(Cc1ccccc1)C(=O)Cn1c(=O)c2cccn2c2cccnc21
Answer: a. O=[N+]([O-])c1cc(Br)c2nsnc2c1N1CCOCC1
{#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=[N+]([O-])c1cc(Br)c2nsnc2c1N1CCOCC1
O=[N+]([O-])c1cc(Br)c2nsnc2c1N1CCOCC1
4-(7-bromo-5-nitro-2,1,3-benzothiadiazol-4-yl)morpholine