COc1cc(/C=C2/C(=O)N(C(=O)OC(C)C)C(Cc3cc(OC)c(OC)c(C)c3OC)C(=O)N2Cc2ccccc2)c(OC)c(C)c1OC
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?