Task: Answer the multiple choice question.
Query: Which drug exhibits a 4.535\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a.) O=S(=O)(c1cccs1)N1CN(Cc2cccs2)c2nc3ccccc3nc21
b.) COc1ccc(NC(=O)CSc2nccn2Cc2ccc(F)cc2)cc1
Answer: a. O=S(=O)(c1cccs1)N1CN(Cc2cccs2)c2nc3ccccc3nc21
{#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=S(=O)(c1cccs1)N1CN(Cc2cccs2)c2nc3ccccc3nc21
O=S(=O)(c1cccs1)N1CN(Cc2cccs2)c2nc3ccccc3nc21
1-(thiophen-2-ylmethyl)-3-thiophen-2-ylsulfonyl-2H-imidazo[4,5-b]quinoxaline