The present invention relates to new optically pure compounds displaying an improved anticancer activity compared to previously known complex mixtures of stereoisomers thereof. The invention provides a data memory system taking the form of a memory card or the like. Each layer of modeling material is electro-plated or otherwise deposited on the previously formed modeling material layer. Methods of repairing defective memory of an integrated circuit are also disclosed. An intake portion for the liquid, that is, a radial inner surface of the through hole that guides the liquid is inclined so that its rotating direction leading side is positioned to the inner-radial side, and thereby, a wider fluid guiding area is secured. An application table is used to obtain the first virtual address, the key and the size.