Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocker?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a CC1CC(C)CN(CCCNC(=O)C2CCN(c3ncnc4c3sc3cccc(F)c34)CC2)C1
b COCCCN1C(=O)C(O)=C(C(=O)c2ccco2)C1c1cccc(Br)c1
c NC(=O)c1ccsc1NC(=O)COC(=O)c1ccc(Cl)cc1
d Cc1occc1-c1nnc(SCC(=O)Nc2ccccc2)n1C(C)c1ccccc1
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_inhib#not &NULL}a {herg_inhib__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_inhib%}
Answer: {%multiple_choice_result}