You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (1S,3R,5R,6S,8R,10R,11S,13R,15R,16S,18R,20R,21S,23R,25R,26S,28R,30R,31R,32R,33R,34R,35R,36R,37R,38R,39R,40R,41R,42R)-31,32,33,34,35,36,37,38,39,40,42-undecahydroxy-10,15,20,25,30-pentakis(hydroxymethyl)-41-[(3R,4S,5S,6R)-2,3,4,5-tetrahydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-2,4,7,9,12,14,17,19,22,24,27,29-dodecaoxaheptacyclo[26.2.2.23,6.28,11.213,16.218,21.223,26]dotetracontane-5-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
user
C42H68O37
assistant