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 N=c1c2c(-c3ccccc3)c(-c3ccccc3)n(Cc3ccco3)c2ncn1CCCn1ccnc1
b CS(=O)(=O)N(CC(=O)NCC1CCCO1)c1cccc([N+](=O)[O-])c1
c Cc1ccc(-n2c(N)cc(=O)nc2SCC(=O)NC2CCCCC2)cc1C
d Cc1occc1C(=O)Nc1nnc(C2CCCCC2)s1
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}