You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (1R)-4-[(1E,3E,5E,7E,9E,11E,13E,15E,17E)-18-[(1R,4R)-4-hydroxy-2,6,6-tri((113C)methyl)(1,2,3,4,5,6-13C6)cyclohex-2-en-1-yl]-3,7,12,16-tetra((113C)methyl)(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18-13C18)octadeca-1,3,5,7,9,11,13,15,17-nonaenyl]-3,5,5-tri((113C)methyl)(1,2,3,4,5,6-13C6)cyclohex-3-en-1-ol .
user
C40H56O2
assistant