Task: Answer the multiple-choice question.
Question: Which compound exhibits a 9.982\% 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: Cc1cccc(C2N=C(N)Nc3nc4ccccc4n32)c1
b: CCN1C(=NCc2ccccc2)N[C@@H](c2ccccc2)[C@H](C(=O)OC)[C@H]1C
Answer: b. CCN1C(=NCc2ccccc2)N[C@@H](c2ccccc2)[C@H](C(=O)OC)[C@H]1C
{#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#}
CCN1C(=NCc2ccccc2)N[C@@H](c2ccccc2)[C@H](C(=O)OC)[C@H]1C
CCN1C(=NCc2ccccc2)N[C@@H](c2ccccc2)[C@H](C(=O)OC)[C@H]1C
methyl (4R,5S,6R)-2-benzylimino-1-ethyl-6-methyl-4-phenyl-1,3-diazinane-5-carboxylate