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 [4-[2-[[(1R,2Z)-12-[2-[4-(hydroxymethyl)-2-methoxyphenoxy]ethoxy]-19-[2-[4-(hydroxymethyl)-2-prop-2-ynoxyphenoxy]ethoxy]-6,13,20-trimethoxy-5-tetracyclo[15.4.0.03,8.010,15]henicosa-2,5,7,10,12,14,17,19-octaenyl]oxy]ethoxy]-3-methoxyphenyl]methanol .
user
C56H62O15
assistant