L-TYROSINE,L-PHENYLALANYL-L-CYSTEINYL-L-TYROSYL-L-ISOLEUCYL-L-CYSTEINYL-L-A-GLUTAMYL-L-VALYL-L-A-GLUTAMYL-L-A-ASPARTYL-L-GLUTAMINYL-L-CYSTEINYL-,CYCLIC (2 ==> 11)-DISULFIDE
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