COc1cc2c(Cc3c4c5c(cc(OC)c(OC)c5c5c(OC)c(OC)ccc35)CCN4C)c3c4c(cc(OC)c(OC)c4c2cc1OC)CCN3C
Heavy atom refers to any atom that is not hydrogen. The heavy atoms in molecules are carbon, oxygen, nitrogen, and sulfur. How many heavy atoms are in the molecule?