CC(C)(C)OC(=O)CC[C@H](NC(=O)C1CCN(C(=O)OC(C)(C)C)CC1)c1nnc([C@H](Cc2ccc(OC(C)(C)C)cc2)NC(=O)OC(C)(C)C)o1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. How many bonds in the molecule are rotatable?