Problem statement: Answer the MCQ question.
Query: Which drug has a 15.942\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a: O=c1[nH]cnc2c1ncn2[C@@H]1C[C@@H](O)[C@H](CO)O1
b: COc1ccc(NC(=O)N(CCO)Cc2cc3c(C)cc(C)cc3[nH]c2=O)cc1
Answer: a. O=c1[nH]cnc2c1ncn2[C@@H]1C[C@@H](O)[C@H](CO)O1
{#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=c1[nH]cnc2c1ncn2[C@@H]1C[C@@H](O)[C@H](CO)O1
O=c1[nH]cnc2c1ncn2[C@@H]1C[C@@H](O)[C@H](CO)O1
9-[(2S,4R,5S)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-1H-purin-6-one