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(A)
A compound A with molecular formula C20H20ClBrFN5O3S is hydrogenated to give a compound B with molecular formula C20H36ClBrFN5O3S. How many rings does compound A have? Assume that sulfur in this case has a valency (not valence electrons) of 4 in these molecules and that all other atoms have standard valencies.
A. 4 B. 3 C. 2 D. 1 E. None of the above
(B)
How many total bonds does compound B have?​
A. 74 B. 73 C. 72 D. 71 E. None of the above

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