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 other words.
Options:
a: COc1ccc(OCCN2CCN(C3CC(=O)N(CCC(C)C)C3=O)CC2)cc1
b: CCCOc1ccc(CC(CC(=O)O)(C(=O)O)C(=O)O)cc1
c: Nc1ccc(N2CCOCC2)c(S(=O)(=O)Nc2cc(Cl)ccc2Cl)c1
d: CC1CCCCN1S(=O)(=O)c1ccc(NC(=O)c2ccco2)cc1
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}