Task: Answer the MCQ question.
Question: Which compound has a 4.462\% 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=Nc1c(O)[nH]c2ccc(Cl)cc12
b. CCCCOc1cccc(C(=O)Nc2ccc(NC(=O)c3ccco3)cc2)c1
c. N#Cc1ccccc1NC(=O)CN1CC=C(c2ccccc2)CC1
d. Cc1cc(CNC(=O)COC(=O)c2ccc(Cl)c(N)c2)cc(C)c1O
Answer: a. O=Nc1c(O)[nH]c2ccc(Cl)cc12
{#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=Nc1c(O)[nH]c2ccc(Cl)cc12
O=Nc1c(O)[nH]c2ccc(Cl)cc12
5-chloro-3-nitroso-1H-indol-2-ol