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: CC(C)Cn1c(=O)c2c(nc3n2CCCN3Cc2ccccc2)n(C)c1=O
b: COc1cc(C(=O)N2CCN(C/C=C/c3ccccc3)CC2)cc(OC)c1OC
c: CC(C)CN(C(=O)CN1CCN(S(=O)(=O)c2ccccc2)CC1)c1c(N)n(CC(C)C)c(=O)[nH]c1=O
d: Cc1cc(CNC(=O)Nc2ccc3c(c2)OCO3)nn1C
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}