Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocking compound (<10uM)?
Constraint: You must select none, one or more options from a or b without using any additional words.
Options:
a. O=C(O)[C@@H](c1ccccc1)N1CCC(CN2CCC(Oc3ccc(Cl)c(Cl)c3)CC2)CC1
b. Nc1nc(N2CCNCC2)c2ccc(C3CCCC3)cc2n1
Answer: b
Task: Please answer the multiple choice question.
Question: Which molecules are {herg_blocker#not &NULL}a {herg_blocker__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_blocker%}
Answer: {%multiple_choice_result}
7-cyclopentyl-4-piperazin-1-ylquinazolin-2-amine