Cc1cc(C(=O)COC(=O)C23CC4CC(CC(O)(C4)C2)C3)c(C)n1-c1c(C)n(C)n(-c2ccccc2)c1=O
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?