Task: Answer the multiple-choice question.
Question: Which drug has a -6.620\% hERG inhibition at a concentration of 1uM?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
(a) CCN1CCN(c2cc3c(nn2)Oc2ccccc2N3C)CC1
(b) CC(/C=N/NC(=O)CSc1nc(C)cc(C)n1)=C\c1ccccc1
(c) Cc1c(C)c2ccc(OCC(=O)N[C@@H](Cc3ccccc3)C(=O)O)cc2oc1=O
(d) O=C(COC(=O)c1ccco1)NCc1ccccc1Cl
Answer: a. CCN1CCN(c2cc3c(nn2)Oc2ccccc2N3C)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#}
CCN1CCN(c2cc3c(nn2)Oc2ccccc2N3C)CC1
CCN1CCN(c2cc3c(nn2)Oc2ccccc2N3C)CC1
3-(4-ethylpiperazin-1-yl)-5-methylpyridazino[3,4-b][1,4]benzoxazine