Cc1nc2c3c4c(sc3n3c(SCC(=O)NCc5ccco5)nnc3n2n1)COC(C)(C)C4
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?