(1S,2S,3S,5S)-5-(2-Amino-6-(benzyloxy)-9H-purin-9-yl)-3-(benzyloxy)-2-(benzyloxymethyl)cyclopentanol , its cas register number 142217-77-4. It also can be called Cyclopentanol,5-[2-amino-6-(phenylmethoxy)-9H-purin-9-yl]-3-(phenylmethoxy)-2-[(phenylmethoxy)methyl]-,[1S-(1a,2b,3a,5b)]- (9CI) .