Task: Answer the multiple choice question.
Question: Which drug exhibits a 22.446\% human ether-à-go-go related gene (hERG) inhibition at 1uM?
Constraint: You must select none, one or more options from a, b, c, d, or e without using any additional words.
Options:
(a) CCO[C@@H]1OC(C(=O)N2CCOCC2)=C[C@H](c2ccc(Br)cc2)[C@H]1CCCO
(b) Cc1cc(OC(=O)c2ccccc2Cl)c([N+](=O)[O-])c(=O)[nH]1
(c) O=c1[nH]c(=S)n(C2CC2)c(O)c1C=NCCc1ccccc1
(d) COc1ccc(/C=N/NC(=O)c2cc(-c3ccccc3OC)nc3ccccc23)cc1COC(C)=O
(e) CCOC(=O)N1CCc2c(sc(NC(=O)CN3CCN(C)CC3)c2C(=O)Nc2ccccc2)C1
Answer: a. CCO[C@@H]1OC(C(=O)N2CCOCC2)=C[C@H](c2ccc(Br)cc2)[C@H]1CCCO
{#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#}
CCO[C@@H]1OC(C(=O)N2CCOCC2)=C[C@H](c2ccc(Br)cc2)[C@H]1CCCO
CCO[C@@H]1OC(C(=O)N2CCOCC2)=C[C@H](c2ccc(Br)cc2)[C@H]1CCCO
[(2R,3R,4S)-4-(4-bromophenyl)-2-ethoxy-3-(3-hydroxypropyl)-3,4-dihydro-2H-pyran-6-yl]-morpholin-4-ylmethanone