Task: Please answer the multiple choice question.
Question: Which molecules are a human ether-à-go-go related gene (hERG) blocker (<10uM)?
Constraint: You must select none, one or more options from a or b without using any other words.
Options:
(a) CNc1cc(Nc2cnc(C#N)c(O[C@@H]3CCN(C)C3)n2)ncc1-c1cnn(C)c1
(b) Cc1cccc(Nc2nc(N[C@@H]3CCC(F)(F)C[C@@H]3N)ncc2C(N)=O)c1
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}
2-[[(1R,2S)-2-amino-4,4-difluorocyclohexyl]amino]-4-(3-methylanilino)pyrimidine-5-carboxamide