Problem statement: Answer the multiple-choice question.
Query: Which drug exhibits a 9.894\% 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 other words.
Options:
[a] CC(Sc1nnc(-c2ccccc2)c(-c2ccccc2)n1)C(=O)Nc1ncc(Cl)cc1Cl
[b] COc1cc2c(c(OC)c1OC)-c1c(cc3c(c1OC)OCO3)C1OC2[C@@H](C)[C@H]1C
[c] O=C(CN1CCC(n2nnc3cc(F)ccc32)CC1)N1CCc2ccccc2C1
[d] O=C(c1ccco1)N1CCN(S(=O)(=O)c2cc(Cl)ccc2Cl)CC1
Answer: b. COc1cc2c(c(OC)c1OC)-c1c(cc3c(c1OC)OCO3)C1OC2[C@@H](C)[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#}
COc1cc2c(c(OC)c1OC)-c1c(cc3c(c1OC)OCO3)C1OC2[C@@H](C)[C@H]1C
COc1cc2c(c(OC)c1OC)-c1c(cc3c(c1OC)OCO3)C1OC2[C@@H](C)[C@H]1C
(18S,19R)-9,12,13,14-tetramethoxy-18,19-dimethyl-5,7,20-trioxapentacyclo[15.2.1.02,10.04,8.011,16]icosa-2,4(8),9,11,13,15-hexaene