Task: Please answer the multiple choice question.
Question: Which molecules are a hERG blocker?
Constraint: You must select none, one or more options from a, b, c, or d without using any additional words.
Options:
a: c1ccc(SCCOCCN2CCc3ccccc3C2)cc1
b: O=C(O)c1cn2c3c(ccc(Cl)c3c1=O)OCC2
c: O=C(c1cccs1)N(Cc1ccc(F)cc1)C1CCS(=O)(=O)C1
d: N#CC(Cc1cccc(CC(C#N)(c2ccccc2)c2ccccc2)c1)(c1ccccc1)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}