Problem statement: Answer the MCQ question.
Query: Which drug exhibits a 8.530\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a) O=c1c2ccccc2nc(-c2cccs2)n1-c1cnccn1
b) COc1cccc(NC(=O)Cn2nnc(C(=O)NCc3ccc4c(c3)OCO4)c2N)c1
Answer: a. O=c1c2ccccc2nc(-c2cccs2)n1-c1cnccn1
{#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=c1c2ccccc2nc(-c2cccs2)n1-c1cnccn1
O=c1c2ccccc2nc(-c2cccs2)n1-c1cnccn1
[O][=C][C][=C][C][=C][C][=C][Ring1][=Branch1][N][=C][Branch1][Branch2][C][=C][C][=C][S][Ring1][Branch1][N][Ring1][#C][C][=C][N][=C][C][=N][Ring1][=Branch1]
3-pyrazin-2-yl-2-thiophen-2-ylquinazolin-4-one