| 2-amino-n<sup>1</sup>-[(6s,13r)-11-hydroxy-2,5,9-trimethyl-6,13-bis(1-methylethyl)-1,4,7,14-tetraoxooctadecahydropyrido[2,1-i][1,4,7,10,13]oxatetraazacyclohexadecin-10-yl]-4,6-dimethyl-3-oxo-n<sup>9</sup>-[(6s,13r)-2,5,9-trimethyl-6,13-bis(1-methylethyl)- |
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