Using Cn1c(=O)c2c(nc3n(Cc4ccccc4)c(=O)cc(O)n23)n(C)c1=O to produce CN1CN(C)c2nc3n(Cc4ccccc4)c(=O)cc(O)n3c2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.