Boronated porphyrin

O=C(C1234C567B189B2%10%11B3%12%13B45%14B6%15%16B78%17B9%10%18B%11%12%19B%14%13%15B%17%16%18%19)OC(C(C(C)=C(/C=C%20N=C%21C(CCC(O)=O)=C\%20C)N%22)=C%22/C=C%23C(C)=C(C(COC(C%24%25%26%27B%28%29%30B%24%31%32B%25%33%34B%26%35%36C%27%28%37B%29%38%39B%30%31%40B%33%32%41B%35%34%42B%36%37%38B%39%40%42%41)=O)OC(C%43%44%45%46B%47%48%49B%43%50%51B%44%52%53C%45%54%55B%46%47%56B%48%57%58B%49%50%59B%52%51%60B%54%53%61B%55%56%57B%58%59%61%60)=O)C(/C=C(C(C)=C/%62CCC(O)=O)\NC%62=C/%21)=N/%23)COC(C%63%64%65%66C%67%68%69B%63%70%71B%64%72%73B%65%74%75B%66%67%76B%68%77%78B%69%70%79B%71%72%80B%73%74%81B%76%75%77B%79%78%80%81)=O

[1]Hill JS, et al. Selective tumor uptake of a boronated porphyrin in an animal model of cerebral glioma. Proc Natl Acad Sci U S A. 1992 Mar 1;89 (5) :1785-9.