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 additional words.
Options:
a) O=c1cc(CN2CCN(Cc3ccccc3)CC2)c2ccc(O)cc2o1
b) Nc1nnnn1N=C1CCCCC1
c) CCOC(=O)c1cccc(P(=O)(C(C)(C)C)C(C)(C)C)c1
d) O=S(=O)(NC1CCCCC1N1CCC(O)CC1)c1ccc(Cl)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}