Using CI, C#CCn1nnc2c(-c3nc(-c4ccccc4)c[nH]3)ncn2c1=O to produce C#CCn1nnc2c(-c3nc(-c4ccccc4)cn3C)ncn2c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.