Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocking compound?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a. O=C(c1cc(=O)c2cc(Cl)ccc2o1)N1CCN(Cc2ccccc2)CC1
b. O=C(CN1CCCCCC1)N/N=C/c1ccc2ccccc2c1
c. CCOc1ccc(NC(=O)CSc2nncc(=O)[nH]2)cc1
d. O=C(N[C@@H](Cc1c[nH]c2ccccc12)C(=O)O)C1CCN(S(=O)(=O)c2cccs2)CC1
Answer: a, b
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}