Task: Answer the MCQ question.
Question: Which compound exhibits a 21.520\% 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=c1c2c(nc3cc(-c4ccccc4)[nH]n13)CCS2
b. CSc1nc(N)nc(-c2cccs2)c1C#N
c. CCC(=O)N1C(Cc2ccccc2)COC1(C)C
d. CC1=CN2C(=N)/C(=C\c3cn(CCCOc4ccccc4)c4ccccc34)C(=O)N=C2S1
Answer: a. O=c1c2c(nc3cc(-c4ccccc4)[nH]n13)CCS2
{#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=c1c2c(nc3cc(-c4ccccc4)[nH]n13)CCS2
O=c1c2c(nc3cc(-c4ccccc4)[nH]n13)CCS2
11-phenyl-4-thia-1,8,12-triazatricyclo[7.3.0.03,7]dodeca-3(7),8,10-trien-2-one