[S(R)]-N-[(S)-(phenyl)[5-(Diphenylphosphino)-9,9-dimethyl-9H-xanthen-4-yl](phenyl)methyl]-2-methyl-2-propanesulfinamide

[S(R)]-N-[(S)-(phenyl)[5-(Diphenylphosphino)-9,9-dimethyl-9H-xanthen-4-yl](phenyl)methyl]-2-methyl-2-propanesulfinamide