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. CSc1nnc(N)n1C(=O)Nc1ccc(Cl)cc1
b. COc1ccccc1/C=C/C=N/NC(=O)CN1CCN(S(=O)(=O)c2ccc(C)cc2)CC1
c. CC(C)(C)NS(=O)(=O)c1ccc(C(=O)Nc2ccc3c(c2)OCO3)cc1
d. COc1ccc(OCCSc2nnc(-c3cccnc3)n2N)cc1
Answer: 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}