Task: Answer the multiple-choice question.
Query: Which compound exhibits a -18.038\% human ether-à-go-go related gene (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 CCc1cc2c(N3CCN(C)CC3)ncnc2s1.Cl
b CNC(=S)NNC(=O)c1noc(C)c1C(=O)N1CCN(C(c2ccccc2)c2ccccc2)CC1
c O=C(NCCCCNC(=O)c1ccc(Br)cc1)c1ccc(Br)cc1
d CCOc1cc(N2CCOCC2)c(OCC)cc1NC(=O)c1ccc(C)cc1
Answer: a. CCc1cc2c(N3CCN(C)CC3)ncnc2s1.Cl
{#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#}
CCc1cc2c(N3CCN(C)CC3)ncnc2s1.Cl
CCc1cc2c(N3CCN(C)CC3)ncnc2s1.Cl
6-ethyl-4-(4-methylpiperazin-1-yl)thieno[2,3-d]pyrimidine;hydrochloride