COc1cc(C2SC(C)C(=O)N2c2ccc(-c3csc(NS(=O)(=O)c4ccc(Cl)c(OC)c4)n3)cc2)ccc1O
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?