Task: Answer the MCQ question.
Query: Which drug exhibits a 21.521\% 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 other words.
Options:
a) CCC(C(=O)NC1CCCC1)N(Cc1ccc2c(c1)OCO2)C(=O)c1snc(C(N)=O)c1N
b) O=C(CSc1nnc(SCc2ccc(Cl)cc2)s1)N/N=C/c1ccc(C(=O)O)cc1
c) Cc1ccccc1C(=O)NC(=S)NC1CCSC1=O
d) O=C(O)CCCn1cc(NC(=O)COc2ccc([N+](=O)[O-])cc2)cn1
Answer: b. O=C(CSc1nnc(SCc2ccc(Cl)cc2)s1)N/N=C/c1ccc(C(=O)O)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#}
O=C(CSc1nnc(SCc2ccc(Cl)cc2)s1)N/N=C/c1ccc(C(=O)O)cc1
O=C(CSc1nnc(SCc2ccc(Cl)cc2)s1)N/N=C/c1ccc(C(=O)O)cc1
4-[(E)-[[2-[[5-[(4-chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]sulfanyl]acetyl]hydrazinylidene]methyl]benzoic acid