COc1ccc(NS(=O)(=O)c2ccc3c(c2)[C@H]2C=CC[C@H]2[C@@H](c2ccc(C(=O)O)cc2)N3)cc1
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?