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 additional words.
Options:
a CCOC(=O)c1nc2cc3n(c(CC(C)C)c-2c1C)CC(C)=C3C.Cl
b Cc1nc2c(-c3ccccc3)cnn2c(N2CCOCC2)c1C
c O=C(NC(=S)NCc1ccccc1)C1CC1
d CCCc1n[nH]c(=O)c2c1nnn2Cc1ccccc1F
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}