Jemalsbros

Hello, everyone I have a question that i'm having a difficult time answering. Any help would be appreciated. The question is as follows: Given that compound A (C30H49B2Br5N7O2S) is hydrogenated to give compound B (C30H55B2Br5N7O2S), how many rings does compound A have. Assume the valency of sulfur in this compound is 4. a) 5 b) 6 c) 7 d) 8 e) none of the above