Task: Answer the MCQ question.
Query: Which drug has a 12.448\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
a.) c1ccc(-c2cn3cccnc3n2)cc1
b.) CCCCCOc1ccc(NC(=O)CCCC(=O)O)cc1
Answer: a. c1ccc(-c2cn3cccnc3n2)cc1
{#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#}
c1ccc(-c2cn3cccnc3n2)cc1
c1ccc(-c2cn3cccnc3n2)cc1
[C][=C][C][=C][Branch1][=C][C][=C][N][C][=C][C][=N][C][Ring1][=Branch1][=N][Ring1][=Branch2][C][=C][Ring1][#C]
2-phenylimidazo[1,2-a]pyrimidine