| http://www.w3.org/ns/prov#value | - As another group of compounds represented by Formula I, M is Eu, Tb, Dy, Sm, Rh, Re, Ru, Cr or In; n varies from 1 to 5; X1 is an antenna; each of X2 and X3 is ???O???; at least one of Y1 and Y2 is ???(CH2)mO???, ???(CH2)mOCNH???, ???(CH2)mOCO2???, ???(CH2)mNHCO???, ???(CH2)mNHCONH???, ???(CH2)mOSO2???, or ???(CH2)mNHSO2-; the other (if any) of Y1 and Y2 is a single bond ???(CH2)m???, ???(CH2)mO??
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