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: O=C(CSC1CS(=O)(=O)c2cc([N+](=O)[O-])ccc21)NNC(=O)c1ccc(Cl)cc1
b: COc1ccc(OC)c(NC(=O)COc2ccc(S(=O)(=O)N3CCCC3)cc2)c1
c: COc1ccc(N2C(=O)CSC23C(=O)Nc2ccccc23)cc1
d: COC(=O)/C=C1\S/C(=N/NC(=O)c2ccccc2)NC1=O
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}