Task: Please answer the multiple choice question.
Question: Which molecules are mutagenic?
Constraint: You must select none, one or more options from a, b, c, or d without using any other words.
Options:
a. Fc1ccc(F)c2ncccc12
b. O=C(O)c1cc(Br)cc2cccnc12
c. Clc1cc(Cl)cc(Cl)c1
d. CCOC(=O)c1[nH]c2ccccc2c1/N=C/c1ccc(C)cc1
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecules are {mutagenic#not &NULL}{mutagenic__names__adjective}?
Constraint: You must select none, one or more options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%mutagenic%}
Answer: {%multiple_choice_result}