(R)-N-((S)-(5-(Diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)(naphthalen-1-yl)methyl)-2-methylpropane-2-sulfinamide

(R)-N-((S)-(5-(Diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)(naphthalen-1-yl)methyl)-2-methylpropane-2-sulfinamide,