Cc1c(N2C(=O)/C(=C3\C(=O)Nc4ccccc43)SC2=S)c(=O)n(-c2ccccc2)n1C
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?