CCOC(=O)c1c(S(=O)(=O)N2CCCC(C(=O)NCc3cccc(OC)c3)C2)c(C)n(C)c1C
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?