Text this: (2 R ,3 R ,4 S ,5 R ,6 S ,8 R ,13 R ,16 S ,17 R)-11-Ethyl-13-methyl-4,6,8,9,16-pentamethoxy-11-azahexacyclo[7.7.2.1 2,5.0 1,10.0 3,8.0 13,17 ]nonadecane.