Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
a. CCOc1ccc2c3c1OC1C(O)C=CC4C(C2)N(C)CCC341
b. CN(c1ccc2c(O)c(N=Nc3ccc4c(S(=O)(=O)O)cccc4c3S(=O)(=O)O)c(S(=O)(=O)O)cc2c1)c1nc(Cl)nc(Cl)n1
c. c1ccc(-c2nnco2)cc1
d. OC1CCN(c2ccc(-c3ccc(Cl)cc3Cl)nn2)CC1
Answer: c
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {acute_toxicity__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}