| http://www.w3.org/ns/prov#value | - able organic carboxylic acyloxy, pharmaceutically acceptable organic sulfonic acyloxy, and pharmaceutically acceptable organic carbamic acyloxy,R2 is hydrogen, hydroxy or lower alkanoyloxy, R3 is methyl, ethyl, propyl or allyl, n is an integer of 1 or 2, and the symbol of a line and dotted line is a single bond or a double bond,or pharmaceutically acceptable basic salt thereof. 5.
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