Using COCCBr, N#Cc1cnc(NC(=O)C23CC4CC(CC(C4)C2)C3)s1 to produce COCCn1cc(C#N)s/c1=N\C(=O)C12CC3CC(CC(C3)C1)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.