Task: Answer the MCQ question.
Query: Which drug has a -2.168\% 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=C(Nc1ccc(C(=O)O)cc1)/C(=C\C=C\c1ccccc1)NC(=O)c1ccccc1Br
b. O=C(NCC1CCCO1)c1ccc(S(=O)(=O)N2CCC(c3nc4ccc(Cl)cc4[nH]3)CC2)cc1
c. COc1cc(/C=N/NC(=O)c2cccnc2)ccc1OS(=O)(=O)c1cc(C)ccc1C
d. CCn1ncc(NC(=S)Nc2ccc(OC)c(OC)c2)c1C(N)=O
Answer: a. O=C(Nc1ccc(C(=O)O)cc1)/C(=C\C=C\c1ccccc1)NC(=O)c1ccccc1Br
{#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=C(Nc1ccc(C(=O)O)cc1)/C(=C\C=C\c1ccccc1)NC(=O)c1ccccc1Br
O=C(Nc1ccc(C(=O)O)cc1)/C(=C\C=C\c1ccccc1)NC(=O)c1ccccc1Br
4-[[(2E,4E)-2-[(2-bromobenzoyl)amino]-5-phenylpenta-2,4-dienoyl]amino]benzoic acid