Task: Answer the multiple-choice question.
Question: Which compound has a 6.168\% hERG inhibition at 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a. COc1cc2ncnc(NCCc3ccccc3)c2cc1OC
b. CSc1nc(N(C)NC(=O)c2ccc(F)cc2)c2ccccc2n1
Answer: a. COc1cc2ncnc(NCCc3ccccc3)c2cc1OC
{#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#}
COc1cc2ncnc(NCCc3ccccc3)c2cc1OC
COc1cc2ncnc(NCCc3ccccc3)c2cc1OC
6,7-dimethoxy-N-(2-phenylethyl)quinazolin-4-amine