Task: Answer the multiple-choice question.
Query: What is the human ether-à-go-go related gene (hERG) inhibition at a concentration of 1uM of a drug with the SMILES O=c1c2c(-c3cccs3)csc2ncn1-c1ccc(Br)cc1?
Constraint: You must return none, one or more options from a, b, or c without using any other words.
Options:
a. 8.428
b. -9.752
c. -2.839
Answer: c. -2.839\%.
{#Task|Problem statement!}: Answer the {#multiple choice|multiple-choice|MCQ!} question.
{#Question|Query!}: What is the {herg_central_at_1uM__names__noun} of a {#compound|drug!} with the {SMILES__description} {SMILES#}?
Constraint: You must return none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{herg_central_at_1uM%SMILES%}
Answer: {%multiple_choice_result}. {herg_central_at_1uM#}{herg_central_at_1uM__units}.
O=c1c2c(-c3cccs3)csc2ncn1-c1ccc(Br)cc1
O=c1c2c(-c3cccs3)csc2ncn1-c1ccc(Br)cc1
3-(4-bromophenyl)-5-thiophen-2-ylthieno[2,3-d]pyrimidin-4-one