Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
[a] 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
[b] S=C1NCCNC(=S)S1
[c] Cc1ccc(C(=O)c2ccc(CC(=O)NCC(=O)Nc3cccc(C)c3C)n2C)cc1
[d] CC(C(=O)O)c1ccc2oc(-c3ccc(Cl)cc3)nc2c1
Answer: b
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}