COc1cccc(C2C(C(=O)Nc3cc(=O)n(C)c(=O)n3C)=C(C)NC(C)=C2C(=O)Nc2cc(=O)n(C)c(=O)n2C)c1O
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?