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 COc1ccc2ncc(=O)n(CCN3CC[C@@H](NCc4cc5c(cn4)OCCO5)[C@H](O)C3)c2c1
b CC(C)(N)C(=O)N1CCn2c(nc(-c3cccc(F)c3)c2Nc2ccc(F)cc2)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-amino-1-[3-(4-fluoroanilino)-2-(3-fluorophenyl)-6,8-dihydro-5H-imidazo[1,2-a]pyrazin-7-yl]-2-methylpropan-1-one