COc1ccc(-c2nnc(SC(C)C(=O)NCc3ccc4c(c3)OCO4)n2Cc2ccco2)cc1
A rotatable bond is defined as any single non-ring bond, attached to a non-terminal, non-hydrogen atom. Amide C-N bonds are not counted because of their high barrier to rotation.  How many rotatable bonds does the molecule have?