(S)-SIPHOS,N-Dimethyl-[(S)-1,1'-spirobiindane-7,7'-diyl]phosphoramidite,(11aS)-10,11,12,13-Tetrahydro-N,N-dimethyl-diindeno[7,1-de:1',7'-fg][1,3,2]dioxaphosphocin-5-amine
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