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NIST X-ray Photoelectron Spectroscopy Database (SRD 20), Version 5.0

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((NHCC(C2H5)C(C2H5)C)CH(NCC(C2H5)C(C2H5)C)CH)2
ethyl C, methyl C
2,3,7,8,12,13,17,18-octaethyl-21H,23H-porphin
nitrogen, other ring

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