Task: Answer the multiple choice question.
Query: Which compound has a 0.665\% 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 other words.
Options:
a O=c1c2ccsc2ncn1Cc1ccccc1F
b Nc1nc(Cn2nnc(-c3ccccc3Cl)n2)nc(N2CCOCC2)n1
Answer: a. O=c1c2ccsc2ncn1Cc1ccccc1F
{#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=c1c2ccsc2ncn1Cc1ccccc1F
O=c1c2ccsc2ncn1Cc1ccccc1F
[O][=C][C][C][=C][S][C][=Ring1][Branch1][N][=C][N][Ring1][=Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1][F]
3-[(2-fluorophenyl)methyl]thieno[2,3-d]pyrimidin-4-one