CO[C@]12CC(=O)C3(C(C[C@H]4CC5CC[C@H]6C[C@@H](OC(C)=O)CC[C@]6(OC(C)=O)C5C[C@@]43C)C1)C1C[C@H]3[C@@H]4CC[C@H]5C[C@@H](OC(C)=O)CC[C@]5(OC(C)=O)[C@H]4CC[C@]3(C)C12
How many benzene-like rings are in this molecule?